PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Such inert conditions are generally accomplished by using inert gas such as carbon dioxide, helium, nitrogen, argon, among other gases, to blanket or purge the reaction mixture often under slightly elevated pressures.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com