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Wikidata:Property proposal/Generic

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Property proposal: Generic Authority control Person Organization
Event Creative work Term Space
Place Sister projects
Economics Transportation Natural science Property metadata

See also:
Wikidata:Property proposal/Pending – properties which have been approved but which are on hold waiting for the appropriate datatype to be made available.
Wikidata:Properties for deletion – proposals for the deletion of properties.

This page is for the proposal of new properties.

Before proposing a property
  1. Check if the property already exists by looking at Wikidata:List of properties (manual list) and Special:ListProperties.
  2. Check if the property was previously proposed or is on the pending list.
  3. Check if you can give a similar label and definition as an existing Wikipedia infobox parameter, or if it can be matched to an infobox, to or from which data can be transferred automatically.
  4. Select the right datatype for the property.
  5. Start writing the documentation based on the preload form below and add it in the appropriate section.

Creating the property

  1. Change status=ready on template to attract the attention of a property creator.
  2. Creation can be done after 1 week by a property creator or an administrator.
  3. See steps when creating properties.

On this page, old discussions are archived. An overview of all archives can be found at this page's archive index. The current archive is located at 2016/08.

Generic properties[edit]

as percentage[edit]

   Not done
Description percentage of the parent value
Data type Number
Domain numeric value
Allowed values +/-#,##0.0000
Allowed units percent
Example Senior (Q1358789) ÷ population (Q33829) × 100 → xx.xx
See also water as percent of area (P2927)
Motivation – Needful qualifier for vote and election results

votes received (P1111)

eligible voters (P1867) 1,745,635
ballots cast (P1868) 1,244,987
as percentage (Pxxxxx) 71.32 qualifier
total valid votes (P1697) 1,220,394

I found no solution saving a percentaged value related to a numeric value


Symbol plain light blue.svg New proposal --Plagiat (talk) 17:41, 24 June 2016 (UTC)

  • Pictogram voting comment.svg Comment this seems like the sort of thing that should be calculated as required rather than stored as a property? Thryduulf (talk) 00:44, 25 June 2016 (UTC)
    • I thought about this also. But as example: I generate user defined voting reports from municipalities of Bavaria (Germany), the maximum is round about 6,400 calculations. I am not sure, what way is faster and cheaper, calculate or query. --Plagiat (talk) 15:54, 25 June 2016 (UTC)
  • Pictogram voting comment.svg Comment Maybe I may use conversion to standard unit (P2442) --Plagiat (talk) 16:23, 25 June 2016 (UTC)
  • Pictogram voting info.svg Info Additional argument: Querying a single electoral constituency delivers all needed / available data. --Plagiat (talk) 11:05, 26 June 2016 (UTC)
  • Symbol oppose vote.svg Oppose This can be calculated. Andy Mabbett (Pigsonthewing); Talk to Andy; Andy's edits 11:14, 29 June 2016 (UTC)
  • Symbol oppose vote.svg Oppose I don't think wikidata should be used as a store to speed up presentation of data. Even a million calculations would be less than a second on just about any device these days. Maybe if there are properties where this is a common issue we could have a javascript gadget that does the calculation as a convenience for people looking at wikidata. Anyway, no I don't think this should be a property. ArthurPSmith (talk) 17:55, 30 June 2016 (UTC)
  • Symbol support vote.svg Support can't necessarily be calculated
    --- Jura 17:57, 30 June 2016 (UTC)
    • @Jura1: In which cases can it not be calculated? --Yair rand (talk) 22:32, 5 July 2016 (UTC)
  • Symbol support vote.svg Support If there are two population numbers from two different sources and two GDP numbers from two different sources it's not trival to calculate the percentage.
    There also might be cases where the uncertainty of a percentage that a source provides is lower than the uncertainty that you get by strict calculation. ChristianKl (talk) 19:40, 8 July 2016 (UTC)
  • Pictogram voting comment.svg Comment "as percentage" of what? "valid votes" out of "ballots cast", "eligible voters", "registered voters" or out of what? Yes, we probably need something like this, but this model does not look firm enough! -- Innocent bystander (talk) 18:46, 29 July 2016 (UTC)
    • That could be solved by using relative to (P2210) as qualifier. Lymantria (talk) 17:17, 2 August 2016 (UTC)
      @Lymantria: I do not think that works. We do not allow qualifiers to qualifiers. Take United Kingdom European Union membership referendum (Q21812812) as an example. UK has a population of ~64M people. 46 500 001 had the right to vote. 33 577 342 used that right. 33 551 983 ballots were valid. 16 141 241 voted "stay", 17 410 742 voted "leave". That is 51,9 % of valid votes, 51,8 % of total votes, 37,4 % of those who had the right to vote and 27,2 % of the total population. To be useful, this new property have to be a qualifier itself. And relative to (P2210) have to be a qualifier to that qualifier. Otherwise wo do not know which "as percentage" belongs to which number. The only alternative is then to allow only one "as percentage" for each number. If you compare with more than one number, the data looses its integrity. -- Innocent bystander (talk) 19:08, 2 August 2016 (UTC)
      @Innocent bystander: You are right, I had been shortsighted here. I have the same concern you have. I thought this qualifier would solve that, but that isn't the case. A percentage has no meaning if it is not defined relative to something. Lymantria (talk) 19:39, 2 August 2016 (UTC)
      I would like to open up to one (or more) less generic properties here. "percentage of valid ballots" or "percentage of casted ballots". We already have water as percent of area (P2927) which is not very generic. We also have to consider those cases which cannot be "calculated". That candidate "A" got 15% is maybe the only thing we know in some cases. I have hundred of Swedish municipal elections mentioned on svwiki where we do not know how many voted, how many ballots each candidate got etc. All we know is how many seats each political party got. In many cases all the seats were taken by independent candidates. -- Innocent bystander (talk) 11:51, 3 August 2016 (UTC)
      We also have central government debt as a percent of GDP (P1689). Your idea is fine with me. Perhaps it is better not to refer to ballots, to allow percentages on votes when computers are/were used. Lymantria (talk) 21:19, 3 August 2016 (UTC)
    • I'm not sure if there is a universal way to determine these percentages. There may be slight differences on what is included or excluded. So if you do want to describe it, you may want an additional qualifier, even if it's parallel to this one.
      --- Jura 06:31, 8 August 2016 (UTC)

@Plagiat, Thryduulf, Pigsonthewing, Jura1, Innocent bystander, Lymantria:  Not done, no consensus. This should be calculated. When we find actual data that can not be calculated, this might convince people that this property is needed. --Srittau (talk) 11:58, 23 August 2016 (UTC)

practiced by[edit]

Description Type of agents that study or practice this particular religion, activity, profession, etc. Aliases: studied by, associated with, has proponent
Data type Item
Domain any activity
Example gnosticism (Q48420)gnostic (Q22679434); Theology of Anabaptism (Q7782239)Anabaptist (Q165580)
Robot and gadget jobs Some could be fed from Getty AAT, when both pairs activity-agent are present

Getty AAT most often has parallels activity → agent (falling in two of their major facets). WD doesn't always have such parallels, but when it does, it's good to express them explicitly.

Pictogram voting comment.svg Comment An inverse property is also needed: practices, studies, associate of, proponent of. Vladimir Alexiev (talk) 13:40, 11 July 2016 (UTC)


@Vladimir Alexiev, Thryduulf: ✓ Done. I tried to address Thryduulf's concerns by referencing those other properties using see also (P1659). That said, field of work (P101) seems to pretty messed up if you have a look at its uses. This is very likely due to its unclear description, which differs for example from the German description. That property is in dire need of cleaning up and I think this new property can help. --Srittau (talk) 12:44, 23 August 2016 (UTC)

Recovered by[edit]

Description person, organisation or vehicle that recovered the item
Data type Item
Template parameter "Recovered by" in en:Infobox spaceflight -->
Domain people, vehicles, objects
Source Nasa website

For complete data in space mission items. If you prefer, we can create a generic "recovered by"... but I don't think it's a good idea Adert (talk) 21:22, 4 June 2016 (UTC)

  • Pictogram voting question.svg Question Why do you think a generic "recovered by" is not a good idea? I can think of several items (unrelated to space) where "recovered by" may wish to be used, e.g. shipwrecks, aircrashes (black boxes, etc), prisoners of war (recovered by an operation and/or a specific military unit), etc. Looking at Wikipedia though "recovered by" seems to be some sort of specific term in astronomy but I don't know what it means or whether that needs a property here or not? Thryduulf (talk: local | en.wp | en.wikt) 22:03, 4 June 2016 (UTC)
Perhaps, I was afraid that it could cause confusion. But for me it is ok --Adert (talk) 22:42, 4 June 2016 (UTC)
@Adert: Do you want to broaden this proposal or should I start a new one? Thryduulf (talk) 01:59, 15 July 2016 (UTC)
@Thryduulf: I'm not very expert in this type of procedures; however I think that "broden the proposal" both the better option. Do you agree with me? Thaks for your help! --Adert (talk) 09:12, 15 July 2016 (UTC)
Yes, I'll make the changes if you want me to? Thryduulf (talk) 10:01, 15 July 2016 (UTC)
Of course! Thanks so much! --Adert (talk) 14:12, 15 July 2016 (UTC)
  • Pictogram voting comment.svg Comment I've significantly generalised this proposal from the original based on the discussion above. Thryduulf (talk) 16:19, 15 July 2016 (UTC)
  • Symbol support vote.svg Support as generalised. Thryduulf (talk) 16:19, 15 July 2016 (UTC)
  • Symbol oppose vote.svg Oppose as currently construed, which allows both Apollo 12 (Q188433)USS Hornet (Q1141355) and Apollo 12 (Q188433)United States Navy (Q11220). Andy Mabbett (Pigsonthewing); Talk to Andy; Andy's edits 17:53, 21 July 2016 (UTC)
    • @Pigsonthewing: That's a good point. My first thought in response is two properties "recovered by" for people/organisations and "recovery vehicle" for vehicles - would that resolve your opposition? Are there any problems with that approach you (or anyone else) can think of? Thryduulf (talk) 19:36, 21 July 2016 (UTC)
      • I don't think there's a problem here. The most specific person/org/vehicle should be used. I would suspect that in most cases, the vehicle is known and has a known operator for the time period in question. In Andy's case above, the USN operated the recovering vehicle at that time. --Izno (talk) 20:21, 21 July 2016 (UTC)
  • Symbol support vote.svg Support Sounds useful. I second Izno's rebuttal of Andy's argument. --Srittau (talk) 18:01, 7 August 2016 (UTC)
  • Pictogram voting comment.svg Comment I left a note on Wikidata talk:WikiProject sum of all paintings asking for input about the combination of paintings and spacecraft. In the meantime, I removed "ready".
    --- Jura 04:38, 18 August 2016 (UTC)
  • Symbol support vote.svg Support -- JakobVoss (talk) 20:07, 22 August 2016 (UTC)

@Adert, Thryduulf, Izno, Jura1, JakobVoss: ✓ Done --Srittau (talk) 11:39, 23 August 2016 (UTC)

Slides of a presentation[edit]

   not ready
Description URL of a file containing a set of slides for a presentation or lecture
Data type URL
Example These slides would go on Michael Peel's Wikimania talk

For many presentations slides can be found for instance on Wikimedia Commons or Slideshare. This helps you find them. GerardM (talk) 06:12, 5 July 2016 (UTC)


  • Symbol support vote.svg Support. Andy Mabbett (Pigsonthewing); Talk to Andy; Andy's edits 15:10, 17 July 2016 (UTC)
  • Symbol support vote.svg Support Eran (talk) 20:02, 22 July 2016 (UTC)
  • Pictogram voting question.svg Question @GerardM: Can you give an example of an item with a URL to slides? Lymantria (talk) 20:39, 22 July 2016 (UTC)
    I have given many presentations among them at Wikimania. They can be found at Slideshare because that is where I uploaded them. Thanks GerardM (talk) 06:32, 23 July 2016 (UTC)
    @GerardM: So that means you can give an example: Item -> url. But you are not actually doing it. Despite of the "ready" label, this proposal is not ready yet. Lymantria (talk) 08:43, 28 July 2016 (UTC)
  • Symbol support vote.svg Support Music1201 talk 21:36, 25 July 2016 (UTC)
  • Pictogram voting comment.svg Comment I don't see which items could use that what would be the advantage over other properties, e.g. described at URL (P973) or full text available at (P953).
    --- Jura 07:52, 26 July 2016 (UTC)
    It is not a full text, that is a text and these are the slides that go with a presentation GerardM (talk) 09:00, 26 July 2016 (UTC).
    Good point. I had in mind slides like Q20950365#P973, but these are actually of interest independent from any presentation. Supposedly, if this property was created, it would use the same link on a new item, not on this one.
    --- Jura 05:15, 28 July 2016 (UTC)
  • I wonder if a URL is the best way to do this. Is there a belief that most slides will be hosted on a website that is not Commons? --Izno (talk) 18:08, 27 July 2016 (UTC)
    Also, what is the expected domain? The property proposal should be fully filled out (or best effort) by GerardM if he wants to have this created. --Izno (talk) 18:09, 27 July 2016 (UTC)
    It is a fact that slides will not be at commons and even when they are, they need to be referred to. There is NO requirement for slides to be any license except available for viewing. The notion of best effort flies in the face of the many properties that are just created because an "admin" thinks it a good idea. The point is; you understand the purpose and filling out more info is waiting for items to be recreated that is now waiting for two weeks. Thanks, GerardM (talk) 05:08, 28 July 2016 (UTC)
    That other properties are created out of process does not mean this one should be too. Thryduulf (talk) 11:22, 28 July 2016 (UTC)
    Baseless accusations of misuse of the tools require evidence, GerardM (talkcontribslogs). And as it happens, I don't understand the purpose of this property, which is why I said the information is missing. Proposing a property is not rocket science. -Izno (talk) 12:34, 28 July 2016 (UTC)
  • Symbol oppose vote.svg Oppose the proposal is not sufficiently detailed to make a proper assessment. Thryduulf (talk) 23:19, 27 July 2016 (UTC)
  • Symbol oppose vote.svg Oppose as well, per above discussion with proposer. --Izno (talk) 12:34, 28 July 2016 (UTC)
  • Symbol oppose vote.svg Oppose Not convinced by the incomplete proposal and the proposer doesn't try to convince me or others. Lymantria (talk) 14:32, 29 July 2016 (UTC)
  • Symbol oppose vote.svg Oppose Use URL (P2699) with an appropriate qualifier for now. If this gains enough traction, I would Symbol support vote.svg Support a sub-property. --Srittau (talk) 18:41, 7 August 2016 (UTC)
  • Symbol oppose vote.svg Oppose Use the general guidelines for sources with url property. Snipre (talk) 14:13, 19 August 2016 (UTC)

day in month[edit]

   Not done
Description item for integer (1 to 33) corresponding to the day
Data type Item
Example February 29 (Q2364)29 (Q543929)

(Add your motivation for this property here.)
--- Jura 14:51, 18 July 2016 (UTC)

  • Pictogram voting comment.svg Comment completes month of the year (P2922) and others.
    --- Jura 14:51, 18 July 2016 (UTC)
  • Pictogram voting question.svg Question why item rather than number datatype? Thryduulf (talk) 22:13, 18 July 2016 (UTC)
    • Easier to query and maintain? Sjoerd de Bruin (talk) 13:42, 19 July 2016 (UTC)
    • A mandatory {{Constraint:One of}} can satisfy almost all the constraint needs for this property. The number/quantity data type is simpler and allows arithmetical operations, so I think it's also a better option. --abián 15:59, 21 July 2016 (UTC)
      • I hesitated between the two. If the other datatype is needed, the numeric value on (e.g.) Q543929#P1181 can be used.
        --- Jura 16:06, 21 July 2016 (UTC)
        • When introducing values, item data type has no on-the-fly character constraints, so it allows writing letters and special characters, and the users will more probably make mistakes introducing items like June (Q120) or Monday (Q105), or easily 25 (Q24560) instead of 25 (Q79986), as a value. Also, an item data type would create unnecessary dependencies between Wikidata items, so you would have to load one more Wikidata item to get the same practical information for each subject with this property. --abián 16:35, 21 July 2016 (UTC)
          • We got fairly efficient with constraints on items. BTW month of the year (P2922) has the same datatype.
            --- Jura 16:41, 21 July 2016 (UTC)
            • month of the year (P2922) has item because it would otherwise not be easy (possible?) to distinguish a value of e.g. "11" meaning November (Q125) and "11" meaning Shevat (Q217642). I can see a use for a "month number" property for use on items about months, but series ordinal (P1545) may be sufficient (and this is getting off-topic for this request). I have to say that calculations were my first thought when querying the datatype here, and Abián's comments are making me lean towards supporting only a number type for this property. Thryduulf (talk) 17:02, 21 July 2016 (UTC)
              • Symbol oppose vote.svg Oppose with item datatype, but I would support with number datatype per the above discussion. Thryduulf (talk) 17:34, 7 August 2016 (UTC)
Symbol oppose vote.svg Oppose as an item datatype. Other than that, use series ordinal (P1545). --Srittau (talk) 09:57, 8 August 2016 (UTC)

@Jura1, Thryduulf, Sjoerddebruin, Abián:  Not done, no consensus. --Sebari (Srittau) (talk) 18:34, 23 August 2016 (UTC)

membership status[edit]

   Under discussion
Description For use as a qualifier of statements with member of (P463) applying to a membership organization (Q6815100), when the organization has different types of members.
Data type Item
Domain any member organization
Example Use academician (Q414528) to distinguish full members from associate members of the Royal Academy of Arts (Q270920), at periods where simply "member of" is ambiguous.
Planned use Data is available relating to the example given.

Membership of an organization is often qualified, for example with associate, honorary, corresponding or foreign members. The particular example given, of the Royal Academy, is of current interest for data work here. As the case of the way we treat the Royal Society (Q123885) shows, with Fellow of the Royal Society (Q15631401) "including Honorary, Foreign and Royal Fellows", not worrying about status is one option; but seems clumsy in data terms.

It would be better, going forward, to create this qualifier property, so that "honorary members", for example, do not have to be defined by a separate item for each organization. Charles Matthews (talk) 10:13, 2 August 2016 (UTC)


does not have part[edit]

   Under discussion
Description Inverse (for want of a better word) of has part (P527). Use to claim what the item does not have, limited to things which would often be expected to be present. For example, a historic building which "does not have part" roof (Q83180).
Data type Item
Example Franklin County State Airport (Q5491432) => control tower (Q918324)
arm (excluding hand) (Q43471) => hand (Q33767)
Source For the example above: FSO (KFSO)
Planned use Can be used to indicate that an airport does not have a control tower (as recorded by the FAA), or does not have a heliport. Plus many other possibilities.
Robot and gadget jobs Possibly bots, or batch jobs, could harvest certain information from external sources.
See also has part (P527)

What an item does not have, can be just as important as what it does have. Danrok (talk) 14:22, 3 August 2016 (UTC)

  • Symbol support vote.svg Support. I can see this as part of a family of negative statements (better name perhaps neeed) along with "except", "does not apply to" and possibly other similar constructions. Thryduulf (talk) 15:09, 3 August 2016 (UTC)
  • Re the description, that's not what "inverse" means. --Yair rand (talk) 18:53, 3 August 2016 (UTC)
  • To be useful, it has to have a reasonable usage, we have no use for statements like "Albert Einstein" does not have part:"Trunk". -- Innocent bystander (talk) 09:29, 4 August 2016 (UTC)
    • Indeed, it's right there in the description "limited to things which would often be expected to be present". Thryduulf (talk) 10:42, 4 August 2016 (UTC)
      • Yes, but the proposal also has a strange example: "does not have part:helipad". Most airport I have visited (and that is maybe not so many) does not have a helipad. I have probably visited more hospitals with a helipad than airports. -- Innocent bystander (talk) 12:51, 5 August 2016 (UTC)
        • An airport without a helipad may possibly still be used by helicopters. Andy Mabbett (Pigsonthewing); Talk to Andy; Andy's edits 16:31, 8 August 2016 (UTC)
          • I changed the wording to heliport, which seems to be the correct term. Its just something which is specified in the aviation authority's description of an airport. No heliport means there are no specific landing facilities for helicopters. They may still be able to land. Danrok (talk) 11:15, 25 August 2016 (UTC)
  • Symbol support vote.svg Support this sounds good to me. Note this is not the usual meaning of "inverse" with regard to properties - it is more a negation rather than an inverse. ArthurPSmith (talk) 18:23, 5 August 2016 (UTC)
  • Symbol support vote.svg Support -- Innocent bystander (talk) 07:47, 6 August 2016 (UTC)
  • Symbol oppose vote.svg Oppose, at least until this is discussed more. For example, if a building has no roof, does that mean it was removed by design, destroyed (maybe the building is a ruin; maybe it is in use and awaiting repair), or it never had one? In at least two of these cases, it had a roof, whose absence should be indicated by an end-date qualifier (and probably a cause). Andy Mabbett (Pigsonthewing); Talk to Andy; Andy's edits 16:31, 8 August 2016 (UTC)
If a building did have a roof, and it was destroyed at some point, then we would claim has part (P527) = roof along with end time (P582) = date the roof was destroyed. Danrok (talk) 17:37, 19 August 2016 (UTC)
Yes, although that already applies to plenty of other generic properties. For example, we don't normally claim that buildings has part (P527) = nail, door hinge, etc. An amount of common sense has to be used. Danrok (talk) 17:41, 19 August 2016 (UTC)
Pictogram voting question.svg Question I wonder how to model that somethings has no more one of its expected part (considering its type) wrt. model that something never had it.
Also an alternative should be to use quantity (P1114) See with SQID with a zero value. author  TomT0m / talk page 13:18, 24 August 2016 (UTC)
TomT0m has a point! Captain Hook (Q1035128) has part hands/ quantity (P1114) 1 is also something worth noting. He still have something, not all hands are missing. -- Innocent bystander (talk) 14:19, 24 August 2016 (UTC)

Guardian topic[edit]

   Ready <create>
Description Identifier for a topic, at the Guardian newspaper website
Data type External identifier
Template parameter in en:Template:Guardian topic
Formatter URL$1
Robot and gadget jobs import from Wikipedia

The Guardian (Q11148) is a substantial British newspaper; now with US and Australian outposts. As shown on the examples, topics may be first- (/music) or second-tier (music/aretha-franklin). Template:Guardian topic (Q14396650) exits in 18 Wikipedias. en.Wikipedia alone has 280 of these topics, in templates, with potential for many more. Andy Mabbett (Pigsonthewing); Talk to Andy; Andy's edits 16:24, 8 August 2016 (UTC)

  • Pictogram voting comment.svg Comment @Pigsonthewing: I think you've transposed your examples? Thryduulf (talk)
  • Pictogram voting comment.svg Comment Is there a source page for these (outside of enwiki)? Is there a commitment to keep the links stable? It's not clear to me they are consistent even between sites - for example I (in the US) seem to see US topics when I hit the "browse all sections" - and the labels don't seem to always match the url, for example "Arts" which links to "us/culture", "Small business" links to "business/us-small-business". Maybe better as a string than an external-id datatype. ArthurPSmith (talk)
  • Symbol support vote.svg Support ok, I think that makes sense. Might as well have this in wikidata then. I do agree it should be external identifier assuming it is applied to items that are the topics of those pages as in your examples. ArthurPSmith (talk) 17:16, 10 August 2016 (UTC)
  • Symbol support vote.svg Support per the above. Thryduulf (talk) 19:41, 10 August 2016 (UTC)
  • Symbol support vote.svg Support. Thierry Caro (talk) 08:34, 12 August 2016 (UTC)


Description length of a path
Represents path length (Q7144654)
Data type Number
Allowed units dimension units, basically as in Property:P2043
Example marathon (Q40244) → 42.195 kilometre (Q828224)
Planned use race distances of sporting events; particular useful during the Olympics, when we have some momentum in this field…
See also length (P2043) and subproperties

length (P2043) is about physical dimensions of objects; it was already stated in its proposal that “dimension” should not be confused with the “length of a path” (distance). Back in April a Wikidatan asked about that on Property talk:P2043, but got no response. After raising attention on Wikidata:Project chat, it was advised to split length and distance into two properties, thus here is a proposal for the latter one. —MisterSynergy (talk) 17:32, 9 August 2016 (UTC)

  • Symbol support vote.svg Support I agree this is quite different from distance along (P795). There are more generics that we should maybe think about adding - what about 'size' for example (super property of height and width, but also suitable for countable items like populations or memory registers etc)? ArthurPSmith (talk) 19:45, 11 August 2016 (UTC)
  • Symbol oppose vote.svg Oppose The difference to length (P2043) is too subtle and confusing. Better extend the definition and documentation of length (P2043) or extend the similar property vehicle range (P2073) (sub-property of length (P2043) but also not used for physical dimension of objects). -- JakobVoss (talk) 13:09, 12 August 2016 (UTC)
    • I completely disagree that the difference between length and distance is either subtle or confusing, they happen to use the same units but other than that they are very different things. vehicle range (P2073) is different again and using length (P2043) to represent it was rejected previously. Thryduulf (talk) 13:21, 12 August 2016 (UTC)
  • Pictogram voting question.svg Question to everybody: Would it be better to withdraw the generic “distance” property proposal here, and instead narrow it to something such as “race distance” which should then only be used on (sporting) event items? It appears as if this one is a bit stuck at the moment. —MisterSynergy (talk) 13:10, 17 August 2016 (UTC)
    • ok for me! -- JakobVoss (talk) 19:00, 19 August 2016 (UTC)
    • I'm happy with that. If there are other uses (I suspect there are but can't think of any) we can discuss a new property or generalising a "race distance" property when the need arises. Thryduulf (talk) 22:28, 19 August 2016 (UTC)

I hereby formally withdraw this proposal. At some point in the future I will propose for something more specific for sporting events (if nobody else does). Thanks for your input! —MisterSynergy (talk) 10:12, 22 August 2016 (UTC)


   Under discussion
Description item required by the subject
Data type Item
Domain any class
Allowed values any material or immaterial entity
Allowed units units that are allowed for values of this property
Example VLC media player (Q171477)Linux (Q388), woodworker (Q15977971)wood (Q287)
Planned use add the requires property to existing software
See also depends on software (P1547), uses (P2283)

I'm working on a project to document (with the help of Wikidata of course!) different kinds of "digital tools" from a user experience point of view. You have all kinds of digital tools: smartphone app, Windows program, website, Software as a Service, software you have to install yourself on a server, with a Docker image, etc.

What I want is a universal property to differentiate the experience offered by these tools and in particular to be able to say if they are easy to install/launch/open. Basically I want to answer the question "what do I need to use that tool"?

The platform (P400) property is not really satisfactory, first of because it is limited to the concept of computing platform which in theory does not allow the use of "world wide web" as a value for example. And saying a software is "web" does not allow to differentiate between a website — such as OpenStreetMap — and a software you have to install on a server — such as Discourse. I thought of adding a "self-hosting" property to describe the possibility of hosting the tool on your own server but it seems too narrow. I have found nothing similar on Wikidata (the Wikipedia article itself is very poor).

A discussion as part of the Informatics/Software WikiProject has given me the idea for a one-size-fits-all solution: adding a "requires" property, which in the context of a software could be used to say "X software requires Y operating system", "X software requires Z hardware" or even "X software requires an installation". The depends on software (P1547) property exists but is obviously still too limited. The "requires" property could also be used outside of the software context, similarly to the uses (P2283) property. 10:27, August 21, 2016‎ Johanricher

  • I'd tend to oppose in current property state because of the way too vague domain of application. Does a sofware requires a user ? I think we already have a uses (P2283) See with SQID property which may overlap in some cases. The second example (wood) seems a language artefact, and the example of a software that requires an installation seems way too different from the other ones. The "requirement" concept seems way too blurry to me here. author  TomT0m / talk page 16:47, 21 August 2016 (UTC)
  • Symbol oppose vote.svg Oppose per TomT0m/ too vague. Andy Mabbett (Pigsonthewing); Talk to Andy; Andy's edits 18:40, 21 August 2016 (UTC)
  • BA candidate.svg Weak oppose @Johanricher: I see the need for something like this, but "requires" doesn't seem to me to be the right name for it, and depends on software (P1547) seems like it would cover most of the use cases. One of my concerns here is that "requires" implies in the software case that it will run only under one OS or one type of hardware, when in fact many applications run across multiple devices and operating systems. "requires" doesn't capture that relationship. Maybe "software runs on" would be a better name? Also unless you have some better examples from outside software where this would be useful, probably best to stick to a quite specific rather than generic property here. ArthurPSmith (talk) 15:45, 22 August 2016 (UTC)

GS1 manufacturer codes[edit]

   Under discussion
Description code for a company or organisation, used in GS1 barcodes
Data type External identifier
Domain Companies or Organisations using GS1 barcodes for their products or reselling barcodes
Allowed values Numbers of variable length, including the 3 digits GS1 country code
Example Carrefour (Q217599) → 302047, 302182, 37004707, 376024694
Source Barcodes on products. . Various other tools.
Planned use mapping GS1 Manufacturer codes to all companies who have on the planet.
Robot and gadget jobs Could check against GS1 database.
See also GS1 country code (P3067)

The manufacturer code is a unique code assigned to each manufacturer by the numbering authority indicated by the GS1 Prefix. All products produced by a given company will use the same manufacturer code. EAN-13 uses what is called "variable-length manufacturer codes." Assigning fixed-length 5-digit manufacturer codes, as the UCC has done until recently, means that each manufacturer can have up to 99,999 product codes--and many manufacturers don't have that many products, which means hundreds or even thousands of potential product codes are being wasted on manufacturers that only have a few products. Thus if a potential manufacturer knows that it is only going to produce a few products, EAN-13 may issue it a longer manufacturer code, leaving less space for the product code. This results in more efficient use of the available manufacturer and product codes.

This will enable reuses of Wikidata such as finding which company a barcode "belongs to". We could then imagine scanning a product and getting information from Wikidata, Wikipedia, Open Food Facts Teolemon (talk) 16:59, 14 August 2016 (UTC)

I've moved the first paragraph, above, from |description=, and substituted a more concise description, suitable for property documentation. Andy Mabbett (Pigsonthewing); Talk to Andy; Andy's edits 15:41, 15 August 2016 (UTC)
  • Maybe should be external identifier rather than Number? Of course it looks like there's no look-up URL for these things. ArthurPSmith (talk) 18:49, 15 August 2016 (UTC)
Valid point. We should be able to point to objects in real-life :-) More seriously, the most authoritative source is GS1, but they don't have linkable urls AFAIK. --Teolemon (talk) 08:36, 16 August 2016 (UTC)
Do you mean a link to a page with a list of numbers for the company? --AVRS (talk) 09:38, 25 August 2016 (UTC)

Number of L2 speakers[edit]

   Under discussion
Description Represents the number of speakers that speak the language as a second language.
Data type Number
Template parameter en:Template:Infobox language: speakers2
Domain Languages
Example Indonesian (Q9240) → 153000000
See also number of speakers (P1098)

 – The preceding unsigned comment was added by Tcp-ip (talk • contribs) at 16:09, 17 August 2016‎ (UTC).



   Under discussion
Description For use as a qualifier of statements with relegated (P2882) or promoted (P2881).
Data type Item
Example .
Planned use Add it to many pages that are using relegated (P2882) or promoted (P2881)

I need a qualifier to show where a team promoted or relegated, to show where the team played the next season due to promotion or relegation of the previous season. Xaris333 (talk) 23:11, 17 August 2016 (UTC)

  • Pictogram voting comment.svg Comment In English at least, I don't think that "at" is the right thing for your use case. I would expect "at" to have a value of a location, an event or a time of day. "to" is what I'd expect, or possibly something more specific if "to" is too generic for others. Thryduulf (talk) 00:35, 18 August 2016 (UTC)
Thryduulf Ok, rename to "to". Xaris333 (talk) 12:19, 18 August 2016 (UTC)
  • Symbol oppose vote.svg Oppose This should be computable, once the old league is marked with its next highest and lowest league. Andy Mabbett (Pigsonthewing); Talk to Andy; Andy's edits 11:36, 18 August 2016 (UTC)
Andy Mabbett An example:
< 2015–16 Cypriot First Division (Q19906304) View with Reasonator See with SQID > relegated (P2882) See with SQID < Pafos FC (Q17442894) View with Reasonator See with SQID >
to search < 2016–17 Cypriot Second Division (Q24067920) View with Reasonator See with SQID >

Is different from:

< 2015–16 Cypriot First Division (Q19906304) View with Reasonator See with SQID > level below (P2500) See with SQID < 2015–16 Cypriot Second Division (Q19905070) View with Reasonator See with SQID >

Xaris333 (talk) 12:19, 18 August 2016 (UTC)

  • (edit conflict) @Pigsonthewing: It is only computable when both leagues have exactly one league above and exactly one league below, this is not always true. For example lower leagues very often have different geographical scope. For example a team relegated from National League (Q58916) may play the next season in either National League North (Q59041) or National League South (Q58915) depending on geography not only of the relegated team but also that of other teams relegated to, promoted from and promoted to the level below National League (Q58916). A team in the Midlands may also move between leagues without promotion or relegation to balance the leagues (e.g. if only southern teams are relegated from the national level). The representation method on Wikidata must work for all levels, not just national to national. Thryduulf (talk) 12:28, 18 August 2016 (UTC)
  • Symbol support vote.svg Support as "to". Thryduulf (talk) 12:29, 18 August 2016 (UTC)