PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Suitable gases for this purpose include chlorine, fluorine, chloro-hydrocarbons, freons, and other halogen containing gases.
http://www.w3.org/ns/prov#wasQuotedFrom
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