About: http://webisa.webdatacommons.org/421744362

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	In yet another illustrated embodiment, the controlling means includes both inlet and outlet devices, wherein each device is a check valve.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com