PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The use of two stage compressors is advantageous when compressing a refrigerant, such as carbon dioxide, that must be compressed to a relatively high pressure and requires a relatively large pressure differential between the suction pressure and discharge pressure to function effectively as a refrigerant.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com