PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • An ion is an atom or molecule with more or less electrons than usual, giving it a positive or negative electric charge.
http://www.w3.org/ns/prov#wasQuotedFrom
  • wisegeek.com