PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • This inexpensive process could revolutionize the availability of solar panels, which are traditionally made using an expensive process that involves high-temperature liquids, silicone, glass and other components.
http://www.w3.org/ns/prov#wasQuotedFrom
  • howstuffworks.com