PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • By the early 1950s, an air of nuclear optimism pervaded the U.S. In the same regard that the nuclear bomb had rendered all other explosives obsolete, the nuclear power plant would one-up coal, oil, and other sources of energy.
http://www.w3.org/ns/prov#wasQuotedFrom
  • priceonomics.com