About: http://webisa.webdatacommons.org/158732727

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	Thus, other gases, such as nitrogen or carbon dioxide, can of course be used instead of helium as the circulation gas.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com