PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Carbon dioxide, water vapor, hydrogen sulfide, oxygen, and other impurities are removed from the raw landfill gas so it can be sold into an adjoining natural gas pipeline and meet their gas quality specifications.
http://www.w3.org/ns/prov#wasQuotedFrom
  • prweb.com