PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • At least one high-pressure application that is appropriate for a pressure cyclone includes hydrocarbon gasification processes, where carbonaceous materials, such as coal, petroleum, crude oil, tars, biofuel, or biomass, are converted into a ???syngas,??? such as carbon monoxide and hydrogen.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com