PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In Messier 87 there are three times as many globulars deficient in heavy elements, such as iron, than globulars rich in those elements", Peng said.
http://www.w3.org/ns/prov#wasQuotedFrom
  • phys.org