PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Oxidation occurs when rust or other compounds react with the odorant to change its chemical composition so that it is less odorous.
http://www.w3.org/ns/prov#wasQuotedFrom
  • socalgas.com