PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Important numbers such as pi, e, gravitation, the speed of light in a vaccuum, charge on an electron, value of human life (that last one is still under debate...).
http://www.w3.org/ns/prov#wasQuotedFrom
  • everything2.com