About: http://webisa.webdatacommons.org/425694726

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 membrane is a disc that lets the evolved hydrogen gas vent out of the battery without letting other gases such as carbon dioxide or air into the battery and water vapor in or out.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk