PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Victims succumb to toxic fumes caused by hydrogen sulfide, methane, carbon dioxide and other noxious gases.
http://www.w3.org/ns/prov#wasQuotedFrom
  • phys.org