PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Often, though, the most prevalent .com address making requests is aol.com, and we cannot tell whether the visitor is a student working on a research project at home or a Civil War buff surfing the Web for new information.
http://www.w3.org/ns/prov#wasQuotedFrom
  • historians.org