PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • However, I doubt we have done enough research on the liquid phases of ammonia, hydrogen sulfide, or other chemicals that are gases to us, but which are liquids in other circumstances, to make an authoritative declaration.
http://www.w3.org/ns/prov#wasQuotedFrom
  • uncommondescent.com