PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Asserting that social networks are the online places where people are talking, Cahill said companies dare not ignore them and need to know what is being said about them on sites such as Facebook, Twitter and MySpace.
http://www.w3.org/ns/prov#wasQuotedFrom
  • clickz.com