About: http://webisa.webdatacommons.org/131303860

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	Ender, just because shale/tar takes more energy to extract than they provide doesn???t make them useless ??? oil is a more convenient form of energy than (say) gas for some purposes.
http://www.w3.org/ns/prov#wasQuotedFrom	johnquiggin.com