About: http://webisa.webdatacommons.org/450144594

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	Nitrogen, air, argon or other suitable gas which can be stored for prolonged periods without leaking from a gas containing vessel is generally used as the pressurized gas.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com