Wikidata:Property proposal/has member 2

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has member

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Originally proposed at Wikidata:Property proposal/Generic

   Not done
Descriptionthe entity that is a member of this group
Data typeItem
Domaincollective entity (Q99527517)
Example 1Twice (Q20645861)has memberNayeon (Q22804243)

Twice (Q20645861)has memberYoo Jeong-yeon (Q25374501)

Twice (Q20645861)has memberMomo Hirai (Q23779926)
Example 2Badminton World Federation (Q126638)has memberBadminton Union of Namibia (Q27147470) Badminton World Federation (Q126638)has memberMauritanian Badminton Federation (Q27147468)
Example 3The Beatles (Q1299)has memberJohn Lennon (Q1203)

The Beatles (Q1299)has memberRingo Starr (Q2632)

The Beatles (Q1299)has memberPaul McCartney (Q2599)
Example 4Group of Seven (Q1547741)has memberFranklin Carmichael (Q3295479) Group of Seven (Q1547741)has memberLawren Harris (Q3106117) Group of Seven (Q1547741)has memberA. Y. Jackson (Q3499926) Group of Seven (Q1547741)has memberFrank Johnston (Q9285666) Group of Seven (Q1547741)has memberArthur Lismer (Q952000) Group of Seven (Q1547741)has memberJ. E. H. MacDonald (Q2665846) Group of Seven (Q1547741)has memberFrederick Varley (Q2301935)
See alsoWikidata:Property proposal/has member Wikidata:Property_proposal/member and other member properties: cast member (P161) chairperson (P488), has part(s) (P527), crew member(s) (P1029), film crew member (P3092), board member (P3320), supervisory board member (P5052), stage crew member (P5802), has program committee member (P5804), thesis committee member (P9161)

Motivation

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We have been using has part(s) (P527) to express the inverse of member of (P463), which is not correct since has part(s) (P527) is transitive and member of (P463) is not.

For an example of why membership is not transitive, if musicians are member of (P463) a musical group and the musical group is part of (P361) the Rock and Roll Hall of Fame (Q179191), the members of the musical group are not part of the Rock and Roll Hall of Fame (Q179191) because member of (P463) is not transitive.

We should not be using has part(s) (P527) to describe membership because it is ontologically incorrect. We should instead have a new property "has member" that is not transitive to correctly describe a membership relationship.

The 23188 uses of has part(s) (P527) to describe membership would be moved over to this new property.

Although inverse properties a generally discouraged, we should create this property because there are already 10+ musical group Wikipedia templates that use has part(s) (P527) to describe the members of musical groups and a replacement property is needed.

Discussion

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@User:Moebeus @AdamSeattle @User:ArthurPSmith @User:GZWDer @User:Gymnicus @User:Nw520 Lectrician1 (talk) 20:29, 19 March 2023 (UTC)[reply]