PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • There are further tricks to getting better roots from a quadratic equation, particularly if the roots are close, if b^2-4ac is near zero ,e.g a Newton Raphson step etc.
http://www.w3.org/ns/prov#wasQuotedFrom
  • daniweb.com