The Semantic MediaWiki proposal looks really promising.
Berlin is the captial of [[is capital of::Federal Republic of Germany|Germany]].
Berlin has about [[Population:=3.390.444|3.4 Mio]] inhabitants.
All that fantastic data, unlocked. (I’ve been meaning to write on post on why explicit metadata is democratic.) Wikipedia database dump downloads will skyrocket.
There are also interesting proposals under Wikidata as well (though big forms make me uneasy), but those mostly seem more applicable to new data-centric projects, while the Semantic MediaWiki proposal looks just right for the encyclopedia. Gordon Mohr‘s Flexible Fields for MediaWiki proposal could probably serve both roles.
Once people get hooked on access to a semantic encyclopedia, perhaps they’ll want similar access to the entire web.
Via Danny Ayers.