About: http://webisa.webdatacommons.org/268632930

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	In fewer numbers, fire departments are also measuring hydrogen cyanide, sulfur dioxide, nitrous oxide and other toxic gases.
http://www.w3.org/ns/prov#wasQuotedFrom	nfpa.org