PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Accordingly, there is a continuing need to develop a safe, practical, long-lived, electrical energy source of constant voltage which is powered by a radioactive source.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com.au