PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • These fluctuations show their presence as minute temperature variations in the cosmic background radiation observed by experiments such as WMAP.
http://www.w3.org/ns/prov#wasQuotedFrom
  • skyandtelescope.com