PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Poor ventilation and fuel-burning, ice-surfacing equipment can release harmful gases, including nitrogen dioxide, carbon monoxide and carbon dioxide, warns the Environmental Protection Agency.
http://www.w3.org/ns/prov#wasQuotedFrom
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