PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A black hole is a region of space with so much concentrated mass there is no way for a nearby object, even light, to escape its gravitational pull.
http://www.w3.org/ns/prov#wasQuotedFrom
  • nasa.gov