About: http://webisa.webdatacommons.org/128051791

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	Presently a round can be fired from a tank without the crew's knowledge that the muzzle end of the cannon is plugged with an obstruction such as mud or sand.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com