PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • And we need to expand the use of solar, wind, and geothermal generators of electricity as well.Battery technology development is an area that can result in big dividends and the development of geo-thermal technology as a means of heating in the winter and cooling in the summer provides a very promising means of generating cheap heating and cooling.
http://www.w3.org/ns/prov#wasQuotedFrom
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