PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • PS: Null, there is such a thing as a spectrum from pure to applied science to engineering and onward to commercial product development. there is a considerable overlap between science, engineering and mathematics, and so it is not helpful to try to force fit tight borders.
http://www.w3.org/ns/prov#wasQuotedFrom
  • uncommondescent.com