PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A noble gas, such as helium or argon, was present and may assist in stabilizing the process, although other gases could be used.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.es