About: http://webisa.webdatacommons.org/64031609

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	Air does not leak out as there is a one way valve at the pilot balloon.
http://www.w3.org/ns/prov#wasQuotedFrom	howequipmentworks.com