PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The flue gas produced within the boiler 22 is comprised of air, products of combustion in thegaseous form, such as water vapor, carbon dioxide, oxides of nitrogen and sulfur, halides, organic compounds, mercury, selenium and other trace metal vapors or trace contaminants, and particulate matter.
http://www.w3.org/ns/prov#wasQuotedFrom
  • patentgenius.com