About: http://webisa.webdatacommons.org/418497342

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	(b) which has a blade which is released from the handle or sheath by the force of gravity or the application of centrifugal force and when released is locked in an open position by means of a button, spring, lever or other device.
http://www.w3.org/ns/prov#wasQuotedFrom	irishstatutebook.ie