About: http://webisa.webdatacommons.org/341841319

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	A selected gas, e.g. an inert gas such as nitrogen, helium or argon, or a mixture thereof, is fed to sender chamber 20 and receiver chamber 24 via flow control valves 21 and 25.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com