dbpedia.org

DBpedia is a community effort to extract structured information from Wikipedia and to make this information available on the Web

Friend of a friend (FOAF) is a phrase used to refer to someone that one does not know well, literally, a friend of a friend. In some social sciences, the phrase is used as a half-joking shorthand for the fact that much of the information on which people act comes from distant sources (as in "It happened to a friend of a friend of mine") and cannot be confirmed.

OpenLink Virtuoso SPARQL Query

DBpedia 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 queries against Wikipedia, and to link other data sets on the Web to Wikipedia data.