PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Thus Einstein suggested field equations of the form Rmn ??? ??? R gmn + Lgmn = ??? kTmn , where k is a constant.
http://www.w3.org/ns/prov#wasQuotedFrom
  • aapt.org