About: http://webisa.webdatacommons.org/310675462

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	The produced gas or biogas contains principally methane and carbon dioxide as well as, trace levels of ammonia, hydrogen sulfide, and organic sulfide compounds.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com