PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A refractory liner is needed in gasifier furnaces used for converting coal or petroleum coke or other ash containing sources of carbon into methane for use in the chemical industries and in glass melting furnaces.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com