About: http://webisa.webdatacommons.org/55161031

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	The purification of natural gas usually takes place in two stages in which the polar gases such as CO2, H2S and water are removed prior to nitrogen removal.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com