PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • If $G$ acts freely on objects, there is a sensible construction of the quotient $C/G$ (this is briefly spelt out here)
http://www.w3.org/ns/prov#wasQuotedFrom
  • mathoverflow.net