PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The metal base and the metal layer can be various metals such as copper, gold, nickel, silver, palladium, tin, combinations thereof, and alloys, and need not necessarily have the same composition.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com