PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Geothermal is a clean, renewable, and low-cost source of energy, but the up-front costs, especially drilling the wells to extract the steam, are substantial.
http://www.w3.org/ns/prov#wasQuotedFrom
  • miga.org