About: http://webisa.webdatacommons.org/281055393

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 barrier 490 allows free movement of water, eggs and other materials to the tank bottom, but prevents the fish from going through.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com