Task: Question Generation
Input (English): The 1974 Norfolk mid-air collision happened on 9 August 1974 at Fordham Fen, Norfolk, England when a Royal Air Force McDonnell-Douglas Phantom FGR2 of 41 Squadron collided with a Piper Pawnee crop spraying aircraft.
Output (English): The point in time of 1974 Norfolk mid-air collision was when?