About: http://webisa.webdatacommons.org/159261521

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 invention relates particularly to optical apparatus for viewing a wide-angle scene and for providing pitch and roll motions for a wide-angle visual display for ground-based craft flight simulators.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com