PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The light from the farthest known quasars left them nearly 13 billion years ago, when the universe was a fraction of its present age.
http://www.w3.org/ns/prov#wasQuotedFrom
  • phys.org