About: http://webisa.webdatacommons.org/368692098

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	It can be made from a number of sources, currently it is most frequently made from methane or other fossil fuels.
http://www.w3.org/ns/prov#wasQuotedFrom	authorstream.com