PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Earth stored heat which is called geothermal heat is another source of renewable energy...Renewable Energy SystemsWind and sun top the list of renewable energy sources as two of the best basic sources for energy.
http://www.w3.org/ns/prov#wasQuotedFrom
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