PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • If you use renewable energy, such as electricity produced from the sun or wind, to create hydrogen, it???s a clean and carbon free process that doesn???t add any greenhouse gases to the atmosphere or use up any fossil fuels???like the kind floating towards the Louisiana wetlands in the Gulf of Mexico.
http://www.w3.org/ns/prov#wasQuotedFrom
  • homeenergy.org