PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Any type of oxygen reactive or nonreactive gas may be used for this purpose and useful gases included nitrogen, carbon dioxide, carbon monoxide, hydrogen, methane, and other hydrocarbon gases and the like.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com