Incorrect use of instance of (P31)
Hello –
This statement on "Metra" (Q1814208) was incorrect, and I have removed it. Errors with instance of (P31) and subclass of (P279) lead to numerous false inferences, in this case including Metra (Q1814208)instance of (P31)physical process (Q17320256). When using these two properties, check the description of your value item, and make sure your statement follows Help:Basic membership properties. (In this case, Metra is a company, and commuter rail (Q1412403) is a service offered by that company.) There is often another property that can accurately express the relationship you had in mind; in this case, industry (P452) works better. You can search through available properties here. Thanks!