PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • For example, the gas, dust and other debris that form the halo of a proto-star can collide and heat up.
http://www.w3.org/ns/prov#wasQuotedFrom
  • scienceblogs.com