PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • By examining the text history in the email (i.e., the content displayed at the bottom of emails preceded by the ???>??? characters) and by examining the subject line, the service provider system 110 determines whether or not the email is a response to a previous communication stored in the archive DB 1040.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com