PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The period of star formation that took place between 9 and 11 billion years ago was particularly active, giving rise to about half the stars we now see in the sky.
http://www.w3.org/ns/prov#wasQuotedFrom
  • thewire.com