PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Suitable metals are particularly silver, gold, copper, platinum, nickel, palladium, iron, titanium, tin, and alloys of these.
http://www.w3.org/ns/prov#wasQuotedFrom
  • sumobrain.com