PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A heads of agreement is a non-binding document outlining the main issues relevant to a tentative (partnership or other) agreement.[1] A heads of agreement document will only be enforceable when it is adopted into a parent contract and subsequently agreed upon.
http://www.w3.org/ns/prov#wasQuotedFrom
  • wikipedia.org