PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The method of claim 1, wherein the first gas is selected from the group consisting of a combination of gases including any two of hydrogen, nitrogen and ammonia.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.es