PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The message can be written down, spoken, or it can even take a nonverbal, or wordless, form such as gestures or a picture.
http://www.w3.org/ns/prov#wasQuotedFrom
  • wisegeek.com