PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Also, the stars have more heavy elements than expected ??? that is, more elements like oxygen, iron, and so on (heavy elements, to an astronomer, are essentially any other than hydrogen and helium).
http://www.w3.org/ns/prov#wasQuotedFrom
  • discovermagazine.com