Hoi,
As I said before, there are only office holders. A person is not defined
only by the office that he once held. Mr Obama is more than just the
incumbent president of the United States. He is not defined by it.
Thanks,
GerardM
On 9 January 2017 at 16:20, Daniel Kinzler <[email protected]>
wrote:
> Am 09.01.2017 um 04:36 schrieb Markus Kroetzsch:
> > Only the "current king of Iberia" is a single person, but Wikidata is
> about all
> > of history, so there are many such kings. The office of "King of Iberia"
> is
> > still singular (it is a singular class) and it can have its own
> properties etc.
> > I would therefore say (without having checked the page):
> >
> > King of Iberia instance of office
> > King of Iberia subclass of king
>
> To be semantically strict, you would need to have two separate items, one
> for
> the office, and one for the class. Because the individual kinds have not
> been
> instances of the office - they have been holders of the office. And they
> have
> been instances of the class, but not holders of the class.
>
> On wikidata, we often conflate these things for sake of simplicity. But
> when you
> try to write queries, this does not make things simpler, it makes it
> harder.
>
> Anything that is a subclass of X, and at the same an instance of Y, where
> Y is
> not "class", is problematic. I think this is the root of the confusion
> Gerards
> speaks of.
>
> --
> Daniel Kinzler
> Senior Software Developer
>
> Wikimedia Deutschland
> Gesellschaft zur Förderung Freien Wissens e.V.
>
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