About: http://webisa.webdatacommons.org/111385253

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	In addition, natural gas is a commodity, the market price of which can be subject to volatile changes in response to changes in the world crude oil market, refinery operations, supply or other market conditions.
http://www.w3.org/ns/prov#wasQuotedFrom	docstoc.com