PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The actual process of galaxy formation involves ordinary matter, mostly hydrogen and helium at the earliest stages, coming together to make stars and through some mysterious process that isn???t well understood, forming gigantic black holes.
http://www.w3.org/ns/prov#wasQuotedFrom
  • bigthink.com