About: http://webisa.webdatacommons.org/239124762

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	Natural gas, the second most abundant fossil fuel after coal, contains methane, a mix of light non-methane hydrocarbons, hydrogen sulfide, carbon dioxide, water vapor, nitrogen, helium, and other trace gases.
http://www.w3.org/ns/prov#wasQuotedFrom	dieselnet.com