PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Some converters might be invertible, maybe all of them, but as I was writing this program, I didn???t have time to make a whole mathematical demonstration about if there might or not be a non-invertible formula to convert units, so converters have a property to ask them whether they can be or not inverted and a property to get the inverse.
http://www.w3.org/ns/prov#wasQuotedFrom
  • codeproject.com