About: http://webisa.webdatacommons.org/147482618

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 gas is chosen according to the procedure to be performed and can be any medically useful gas, such as carbon dioxide, oxygen, nitrous oxide, argon, helium, nitrogen and room air and other inert gases.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com