Property talk:P1731

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Fach vocal classification
method of classifying opera singers according to the range, weight, and color of their voices

Description	Fach (Q1748957), describes the special ablilites of an operatic singers voice
Represents	Fach (Q1748957)
Data type	Item
Domain	According to this template: persons: operatic singers, singers of classical music. Not intended to use for singers in other music styles. According to statements in the property: human (Q5) or fictional character (Q95074) When possible, data should only be stored as statements
Allowed values	items that are an instance of Fach (Q1748957) like dramatic mezzo-soprano (Q6012297), Soubrette (Q836983), tenorino (Q6141663), boy soprano (Q1376492), haute-contre (Q1873389), light soprano (Q3822738) .... (note: this should be moved to the property statements)
Example	Fritz Wunderlich (Q57809) → lyric tenor (Q359282) Hilde Güden (Q87955) → coloratura soprano (Q58192)
Format and edit filter validation	items with this property need to have voice type (P412), several values are common.
Tracking: usage	Category:Pages using Wikidata property P1731 (Q21084917)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties By value of property Most statements Fewest statements Most sitelinks Most linked wikis Total of sitelinks on items Most identifiers Fewest identifiers Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Map of people by place values: place of birth educated at work location residence place of death place of burial January 1st dates People with date of birth on January 1 People with date of death on January 1 People with both dates on January 1 Database reports/Humans with missing claims/P1731 Database reports/Constraint violations/P1731 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 435 Main statement 430 98.9% of uses Qualifier 5 1.1% of uses
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Type “human (Q5), fictional character (Q95074)”: item must contain property “instance of (P31)” with classes “human (Q5), fictional character (Q95074)” or their subclasses (defined using subclass of (P279)). (Help)

List of violations of this constraint: Database reports/Constraint violations/P1731#Type Q5, Q95074, hourly updated report, SPARQL

Item “sex or gender (P21)”: Items with this property should also have “sex or gender (P21)”. (Help)

List of violations of this constraint: Database reports/Constraint violations/P1731#Item P21, hourly updated report, search, SPARQL

Value type “Fach (Q1748957)”: This property should use items as value that contain property “instance of (P31)”. On these, the value for instance of (P31) should be an item that uses subclass of (P279) with value Fach (Q1748957) (or a subclass thereof). (Help)

List of violations of this constraint: Database reports/Constraint violations/P1731#Value type Q1748957, hourly updated report, SPARQL

Item “date of birth (P569)”: Items with this property should also have “date of birth (P569)”. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P1731#Item P569, SPARQL

Scope is as main value (Q54828448): the property must be used by specified way only (Help)

List of violations of this constraint: Database reports/Constraint violations/P1731#Scope, hourly updated report, SPARQL

This property is being used by: eu:Txantiloi:Biografia infotaula automatikoa Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)