About: http://webisa.webdatacommons.org/389689232

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	Major energy resources such as oil, gas and coal are nonrenewable, and their cost of extraction must increase with cumulative depletion.
http://www.w3.org/ns/prov#wasQuotedFrom	docstoc.com