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DBpedia
DBpedia.org is a community effort to extract structured information from Wikipedia and to make this information available on the Web. DBpedia allows you to ask sophisticated... -
2000 U.S. Census in RDF (rdfabout.com)
2000 U.S. Census converted into over a billion RDF triples. Population statistics at various geographic levels, from the U.S. as a whole, down through states, counties,...