PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Should the demand for and price of oil drop markedly in the next few years, there is a good chance that this will coincide with what would otherwise have been unmistakable indications that world oil production had peaked.
http://www.w3.org/ns/prov#wasQuotedFrom
  • energybulletin.net