PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • It turns out, for example, that although Boyle developed the concept of what he called the ???spring of the air,??? he never wrote down his law in the algebraic form that is now familiar: pV = k, where p is the pressure of the system, V is the volume of the gas, and k is a constant.
http://www.w3.org/ns/prov#wasQuotedFrom
  • americanscientist.org