PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • That said, the price of aluminum is lower than it was in the late 1980s, a sharp contrast with such commodities as copper and gold that are up sharply since then.
http://www.w3.org/ns/prov#wasQuotedFrom
  • barrons.com