PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The part pictured here is 2.5 light years in length (the equivalent of 23 million return trips to the Moon).The Perfect Storm, a small region in the Swan Nebula, 5,500 light years away, described as 'a bubbly ocean of hydrogen and small amounts of oxygen, sulphur and other elements'.
http://www.w3.org/ns/prov#wasQuotedFrom
  • blogspot.com