About: http://webisa.webdatacommons.org/9628954

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	Impurities such as methane or carbon monoxide can be removed by a method such as PSA as necessary.
http://www.w3.org/ns/prov#wasQuotedFrom	sumobrain.com