PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • RTG power levels are low enough that the spacecraft occasionally relies in part on battery power (accumulated during inactive periods) to run the experiments and other systems.
http://www.w3.org/ns/prov#wasQuotedFrom
  • astronautix.com