PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Cassini at Iapetus was moving very slowly, but Galileo at Io was moving very fast, so motion blur was a problem and compensation more difficult.
http://www.w3.org/ns/prov#wasQuotedFrom
  • unmannedspaceflight.com