Suppose I publish a web page about a notable person, building or other
entity; and that the subject has a Wikidata entry.

What's the best meta header, to assert that the page is about the same
subject as the Wikidata entry?

I'm thinking of  something like:

   <link rel="foo" href="https://www.wikidata.org/wiki/Q42">

or

   <meta name="DC.bar" content="https://www.wikidata.org/wiki/Q42">

but what values of foo or bar?

Given the likely ubiquity of Wikidata in the near future, should we mint:

   <link rel="wikidata"

or a more generic:

   <link rel="datasource"  ?

Are there any such headers already in the wild? Should Wikipedia
articles and pages on sister projects include such headers?

--
Andy Mabbett
@pigsonthewing
http://pigsonthewing.org.uk

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