PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • You may not see the usefulness of it yet, but it is vital in physics and other sciences, and you can not do calculus without it.
http://www.w3.org/ns/prov#wasQuotedFrom
  • purplemath.com