| Lucas_Werkmeister_WMDE added a comment. |
@Agabi10 I think that’s working as intended – “instance of” and “subclass of” are different things and, in general, shouldn’t be used interchangeably. If some people think that “instance of” should be used and add a constraint to reflect that, and other people think that “subclass of” should be used and add statements with that property, then those people should get in touch and have a discussion about the discrepancy. If the constraint violations make such disagreements more obvious, and lead to more such discussions, that’s a good thing in my opinion :)
In the case of Q1616075, the constraint violation is certainly technically correct, and looking at P452 – “industry of company or organization”, “Wikidata property for items about organizations” – I would say that it’s also appropriate: the property seems intended only for individual organizations, not classes of them.
Cc: Lydia_Pintscher, Jonas, Lucas_Werkmeister_WMDE, abian, Aklapper, Agabi10, GoranSMilovanovic, Soteriaspace, JakeTheDeveloper, QZanden, Izno, Wikidata-bugs, aude, TheDJ, Mbch331
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