PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Re the edit: In string theory (which I have only a poor understanding of), I think gravity is a force just like the other three.
http://www.w3.org/ns/prov#wasQuotedFrom
  • stackexchange.com