PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Because heat pumps consume less energy overall than conventional home-heating systems, heat-pump use helps to reduce greenhouse gases such as carbon dioxide, sulfur dioxide, and nitrogen oxides.
http://www.w3.org/ns/prov#wasQuotedFrom
  • guernicamag.com