PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • do not want to sound too negative as I say your approach is a valid one and maybe some people prefer it - just would not be my first choice!
http://www.w3.org/ns/prov#wasQuotedFrom
  • codeproject.com