About: http://webisa.webdatacommons.org/386826145

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	Oil is a source of energy, other forms of energy are less easy to commodify and therefore market for a profit, therefore in a capitalist environment these energy sources are ignored.
http://www.w3.org/ns/prov#wasQuotedFrom	michaelwharton.co.uk