About: http://webisa.webdatacommons.org/326806760

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 fluid can use a tubular shaft for intake and exhaust thru weight via a controlled open and closed pipe, such as by a valve.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com