About: http://webisa.webdatacommons.org/200682064

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	While the preconditioning in accordance with the invention has been described employing air as the injection gas, other gases may be employed, such as nitrogen, methane, carbon dioxide, flue gas, and mixtures thereof.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es