PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • This problem is especially stark when the futures curve is sharply in contango, which it has been in recent years for the volatility indexes ??? as well as for commodities such as oil and natural gas.
http://www.w3.org/ns/prov#wasQuotedFrom
  • fortune.com