PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • From the separator, contaminants such as N2, H2S, and CO2, and perhaps a small portion of CH4, are expelled from an exhaust pipe 18 of the separator, and the cleansed natural gas is provided to a natural gas pipeline, to a storage tank, to some other destination, or to one or more additional separators for further processing.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com