instruction:
Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.
question:
Context : The 1942 Ruislip Wellington accident occurred on the 18 October 1942 when a Royal Air Force twin-engined Vickers Wellington 1c bomber crashed close to South Ruislip station while on approach to RAF Northolt, all 15 on-board and six on the ground (including four children) were killed. 
Answer : 18 October 1942
answer:
What is the full date that 1942 Ruislip Wellington accident crashed on?


question:
Context : DTAC is owned by Telenor both directly and indirectly, and both companies share the same logo. 
Answer : Telenor
answer:
What is DTAC's parent company?


question:
Context : Colonel Charles deForest Chandler (December 24, 1878 -- May 18, 1939) was an American military aviator, and the first head of the Aeronautical Division, U.S. Signal Corps that later became the United States Air Force. 
Answer : United States Air Force
answer:

Which armed forces utilised the service of Charles deForest Chandler?