PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The method as recited in claim 1, wherein said electronic mail message data further includes at least one type of data selected from a group of types of data comprising timestamp data, authentication related data, device identifying data, control data, text data, graphics data, and image data.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com