PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • September 21st, 2012 by James Ayre Solar power, wind power, biogas, and other renewable energy sources are becoming increasingly important in the generation of electricity.
http://www.w3.org/ns/prov#wasQuotedFrom
  • cleantechnica.com