PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Carbon black: Finely processed forms of carbon derived from the incomplete combustion of natural gas or petroleum; used principally in ink and rubber.
http://www.w3.org/ns/prov#wasQuotedFrom
  • papercalculator.org