PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • To allow the salts to get hotter, some companies, such as SolarReserve in Santa Monica, Calif., are developing so-called power towers???vast fields of mirrors that concentrate sunlight onto a central tower.
http://www.w3.org/ns/prov#wasQuotedFrom
  • fool.com