About: http://webisa.webdatacommons.org/384404602

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 gaseous fluid to which the viscosified aqueous fluid containing the suspended proppant is added is preferably either an inert gas, such as nitrogen, carbon dioxide, air, natural gas or a combination thereof.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com