About: http://webisa.webdatacommons.org/315048843

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	Once the gas is brought to the surface, it is refined to remove impurities, such as water, other gases and sand.
http://www.w3.org/ns/prov#wasQuotedFrom	duke-energy.com