PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • As is well known in the art, gas scrubbers are a common means of removing gaseous and particulate pollutants from gases.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com