About: http://webisa.webdatacommons.org/321190607

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	If desired, prior to evacuation, an inert gas, such as carbon dioxide or nitrogen, can be used to purge the air from the envelope.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au