PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • EPA???s chemical accident prevention regulations cover approximately 140 hazardous chemicals including anhydrous ammonia, chlorine and highly flammable substances such as propane.
http://www.w3.org/ns/prov#wasQuotedFrom
  • epa.gov