About: http://webisa.webdatacommons.org/255518311

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	Methane and other gases, while frequently produced with petroleum, also occur in association with coal.
http://www.w3.org/ns/prov#wasQuotedFrom	usgs.gov