PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Because of the massive amount of building going on in that country, global prices for steel, copper, concrete and other materials are skyrocketing and are often unpredictable, leading to higher-than-expected project costs, said Robert Puentes, who directs the Brookings Institution???s Metropolitan Infrastructure Initiative.
http://www.w3.org/ns/prov#wasQuotedFrom
  • washingtonpost.com