PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The problem of impending oil crisis, then, is a problem of how expensive energy is going to get when the oil starts to run out, as oil will probably be, by far, the cheapest form of energy known to our civilization.
http://www.w3.org/ns/prov#wasQuotedFrom
  • dailykos.com