PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Hydrogenation ??? to treat with hydrogen ??? is a chemical reaction between molecular hydrogen (H2) and another compound or element, usually in the presence of a catalyst such as nickel, palladium or platinum.
http://www.w3.org/ns/prov#wasQuotedFrom
  • wikipedia.org