PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Large apertures collect more light from astronomical sources; permitting astronomers to observe fainter objects and enabling measurements to be made of very distant sources (i.e. galaxies and quasars) whose light was emitted when the universe was a fraction of its present age.
http://www.w3.org/ns/prov#wasQuotedFrom
  • physicscentral.com