About: http://webisa.webdatacommons.org/144519863

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	Produced by leaks in pipelines, methane, along with propane and other flammable gases, must be monitored with a combustible gas sensor that gives an alert at the lower explosive limit (LEL).
http://www.w3.org/ns/prov#wasQuotedFrom	davis.com