PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • One source of water that hasn???t been explored, that???s mainly due to cost and other efficiencies, is extracting it from the air.
http://www.w3.org/ns/prov#wasQuotedFrom
  • boingboing.net