PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The five main sources of such industrial solar energy are usually thought to be hydroelectric power, passive solar, photovoltaics, wind and various types of biomass.
http://www.w3.org/ns/prov#wasQuotedFrom
  • resilience.org