PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Preferably the fluid within the reservoir Si is an inert gas such as carbon dioxide or nitrogen but may be a liquid, such as liquefied ammonia.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com