PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The Baldwin Hills Reservoir had been built, as were others, to assure an ample supply of safe water for the people of Los Angeles in case of catastrophe such as earthquake, fire, or war, and its failure was a blow to engineering confidence and the subject of many writings and two professional conferences (1972 and 1987, see references).
http://www.w3.org/ns/prov#wasQuotedFrom
  • wikipedia.org