PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The first is a semiconducting material such as silicon that can absorb the photons from sunlight, knocking electrons from atoms to produce a flow of electricity.
http://www.w3.org/ns/prov#wasQuotedFrom
  • energy.gov