schema:about connects Wikidata item with Wikipedias,
e.g.,
Wikidata Query Service: "SELECT * WHERE { ?page schema:about wd:Q80 }"
The triple is also available directly from the MediaWiki entity:
https://www.wikidata.org/entity/Q80.nt
Thank you! I was looking for "outgoing" links from a wikidata item to their
corresponding page, but if I understand correctly links point the other way around (from a
schema:Article to a wikibase:Item). I think I've got this. Thanks.