PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Regarding the compound gases including carbon, the material gas used in the invention includes either one kind of the gases or several kinds of the gases.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com