PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The user, who may be referred to as a sender, may do so using an instant messaging application to identify a buddy from within their buddy list and enter text or other content for the instant message.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com