PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Copper is a volatile commodity traded on the stock market so the price of wire will go up and down on a day to day basis.
http://www.w3.org/ns/prov#wasQuotedFrom
  • electricalwire.biz