About: http://webisa.webdatacommons.org/182625457

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) closing both valves in such a manner as to ensure a pressure differential across at least one of the valves; and
http://www.w3.org/ns/prov#wasQuotedFrom	google.com