PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • organic materials of shale oil, from the mixture; mixing the foam containing organic materials with the liquid solvent, for example ethanol; and processing this mixture by vortical movements, wave movements, acoustical streams, or combinations thereof.
http://www.w3.org/ns/prov#wasQuotedFrom
  • sumobrain.com