PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • on; and R6 and R8 are the same or different and selected from the group consisting of hydrogen and compounds including hydrogen and carbon.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com