PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Such a fuel cell 100 is a relatively pollution-free power source, because it does not produce any polluting emissions such as SOx, NOx, etc., and produces only little amounts of carbon dioxide.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com