PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • For stabilization of optics in which accurate pointing at a particular target is desired, an attitude reference system is required, typically containing rate gyroscopes, optical reference sensors (e.g. star trackers or signals from the optical system being pointed) and possibly processing algorithms such as a Kalman filter.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com