About: http://webisa.webdatacommons.org/308853101

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 gas reservoirs, however, the methane is typically found in mixtures with natural gas liquids - such as ethane, propane, butane and pentanes - as well as water vapour, hydrogen sulphide, carbon dioxide, nitrogen and other gases.
http://www.w3.org/ns/prov#wasQuotedFrom	capp.ca