PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The Mars Reconnaissance Orbiter has been orbiting Mars with six science instruments since 2006 and is now an extended mission to observe how processes such as wind, meteorite impacts and seasonal frosts are continuing to affect the Martian surface today.
http://www.w3.org/ns/prov#wasQuotedFrom
  • upi.com