PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Venting is necessary to prevent the buildup of nitrogen, carbon dioxide, and other gasses which reduce the partial pressure of oxygen in the gas space and thus reduce the oxygen transfer efficiency of the system.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com