PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Most of the familiar names we associate with social media such as Twitter, Facebook , YouTube, were barely functioning 5 years ago.
http://www.w3.org/ns/prov#wasQuotedFrom
  • authorstream.com