PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Cosmic rays are charged particles moving at close to the speed of light, ejected from phenomena such as supernovae and their remnants.
http://www.w3.org/ns/prov#wasQuotedFrom
  • astronomynow.com