PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Briefly, still another preferred embodiment of the present invention is a system for communicating an e-mail message securely between a sender and a receiver.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com