PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • One year later, the number had doubled to six states including South Dakota and Iowa, which now generate approximately 20 percent of their total electricity from the wind alone.
http://www.w3.org/ns/prov#wasQuotedFrom
  • cleantechnica.com