PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • It may be a noble metal such as platinum or palladium or, more commonly, a base metal, usually from Groups VA, VIA or VIIIA of the IUPAC Periodic Table e.g. nickel, cobalt, molybdenum, vanadium, tungsten.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com