PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • More specifically, the index reflects the price levels of the futures contracts on a single commodity as well as the discount or premium obtained by ???rolling??? hypothetical positions in such contracts forward as they approach delivery.
http://www.w3.org/ns/prov#wasQuotedFrom
  • etfdb.com