PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • However most jewelry, for example, comes with the gold mixed with other metals, such as silver, copper, even platinum and palladium and rhodium (in the case of white gold).
http://www.w3.org/ns/prov#wasQuotedFrom
  • goldprice.org