About: http://webisa.webdatacommons.org/410700344

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	As depicted in FIG. 12, the device 34 permits one-way flow through the passage 36, but latching devices or other types of devices may be provided to prevent flow in either direction through the passage, if desired.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com