PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Solar cells based on organic materials ??? basically, polymers or types of plastic ??? have a number of advantages over conventional silicon cells.
http://www.w3.org/ns/prov#wasQuotedFrom
  • cleantechnica.com