PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A black hole is an object so compact that its gravity becomes overpowering, and anything that strays within a certain distance of it falls into it.
http://www.w3.org/ns/prov#wasQuotedFrom
  • world-science.net