PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The gas mixture may further comprise of other gases such as nitrogen, carbon monoxide, carbon dioxide, sulfur dioxide, BCl3, HBr, Cl2 and a fluorine containing gas such as NF3, SF6, CF4, or combinations thereof to improve the performance.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com