PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Ozone readily is produced from air or other oxygen containing gas by passage of a high voltage electrical discharge through a stream of the oxygen containing gas.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com