Well, I decided to be bold (that is often the road to reversion, but let's get the ball rolling):
Tarok[1] now has Pay Dirt[2] as his father. B.B.S. Sugarlight[3] now has Sugarsweet Sid[4] as his mother, and she has Sugarcane Hanover[5] as her father. 1 https://www.wikidata.org/wiki/Q12338810 2 https://www.wikidata.org/wiki/Q12331109 3 https://www.wikidata.org/wiki/Q20872428 4 https://www.wikidata.org/wiki/Q20873813 5 https://www.wikidata.org/wiki/Q12003911 When I asked about this on Facebook, the first answer was "Random guess: Check out Secretariat. My guess is that it has been registered thoroughly." Now the quest is to connect Secretariat, Tarok and Sugarcane Hanover.. :-) On Wed, Aug 26, 2015 at 9:24 PM, Joe Filceolaire <filceola...@gmail.com> wrote: > Every other ontology mixes humans with fictional characters and with groups > of humans and possibly fictional humans (biblical characters for instance). > Wikidata has gone to a lot of trouble to try to untangle these into separate > classes. Anyone trying to get an exhaustive list of humans and not using > <instance of:human> deserves everything he gets. > > P21 (sex or gender) is very explicitly specified as being usable for humans > and for other creatures. At the request of some languages we have separate > items for 'female human' and for 'female creature' (we have the same for > male), 'Female human' is 'subclass of:female creature'. Relying on P21 to > tell if something is or is not human is not recommended as it will probably > miss out all the humans who are neither male nor female - wikidata has about > a dozen other values that can be used with this property. > > Father (P22) and mother (P25) can perfectly well be used for non-humans and > if the current constraints on these properties flag this as a problem then > the constraints will have to be updated. I expect to see extensive pedigrees > for racehorses entered in Wikidata. Note that there is a proposal under > consideration to replace P22 and P25 with a single 'parent' property. > > Hope this helps > > Joe > > > On Wed, 26 Aug 2015 18:44 Svavar Kjarrval <sva...@kjarrval.is> wrote: >> >> >> >> On mið 26.ágú 2015 13:58, Peter F. Patel-Schneider wrote: >> > I don't think that P21 (https://www.wikidata.org/wiki/Property:P21, sex >> > or >> > gender) is a subclass of P31 >> > (https://www.wikidata.org/wiki/Property:P31, >> > instance of). Properties aren't subclasses in general. >> > >> > Perhaps you meant to talk about >> > https://www.wikidata.org/wiki/Property:P21 >> > (sex or gender) being related via >> > (https://www.wikidata.org/wiki/Property:P31 >> > (instance of) to https://www.wikidata.org/wiki/Q18608871 (Wikidata >> > property >> > for items about people). This indicates that the property should only >> > be >> > used on people, even though the description of the property itself talks >> > about >> > its use on animals. >> > >> > It appears that Wikidata is not very consistent internally. >> > >> > peter >> > >> Sorry, I'm not used to the Wikidata lingo. >> >> To further explain my point (to which I think you have already agreed to): >> If I were to produce a code which makes assumptions based on such >> relations, the code would come to the contradiction that a non-human >> with a P21 relation is a human, if it were to recursively travel via in >> the hierarchy of declarations. P21 is declared with a P31->Q18608871 and >> Q18608871 is in turn declared P1269->Q5. Unless special precautions >> would be taken, anyone trying to generate an exhaustive list of all >> humans on Wikidata (without relying solely on the direct declaration on >> each item), they might find themselves with non-humans on that list due >> to travelling backwards via such relations. >> >> In essence, it seems like P21 either wrongfully allows definitions of >> genders of non-humans or that the property is too broad for a >> declaration of P31->Q18608871. >> >> - Svavar Kjarrval >> >> _______________________________________________ >> Wikidata mailing list >> Wikidata@lists.wikimedia.org >> https://lists.wikimedia.org/mailman/listinfo/wikidata > > > _______________________________________________ > Wikidata mailing list > Wikidata@lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/wikidata > -- http://palnatoke.org * @palnatoke * +4522934588 _______________________________________________ Wikidata mailing list Wikidata@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikidata
