PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • ???Geothermal is the best alternative, as solar and wind are not cheap, and they cannot supply energy twenty four hours a day, seven days a week, but these three are all safe, clean, no carbon footprint, viable and extant technologies.
http://www.w3.org/ns/prov#wasQuotedFrom
  • oursay.org