PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • More is unknown than is known ??? we know how much there is, and we know some of its properties; other than that, dark energy is a mystery ??? but an important one.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com