Assertion: borough's land | /r/ObjectUse | used by raf biggin hill
Facets:
value: formerly
type: TEMPORAL
Source sentences:
text: Its airport occupies land formerly used by RAF Biggin Hill, one of the principal fighter bases protecting London from German bombers during the Battle of Britain.
text: Biggin Hill also has an airport, London Biggin Hill Airport, which uses much of the land formerly used by RAF Biggin Hill, an aerodrome best known for its role during the Battle of Britain.