PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • You can make experiments such as if you mix this ???amount??? -that can be measured precisely- of this chemical with a different amount of that other chemical you get such amount of a third chemical.
http://www.w3.org/ns/prov#wasQuotedFrom
  • theness.com