Task: Question Generation
Input (English): Context : The 1924 Imperial Airways de Havilland DH.34 crash occurred on 24 December 1924 when de Havilland DH.34 G-EBBX of Imperial Airways crashed at Purley, Surrey, United Kingdom killing all eight people on board. 
Answer : 24 December 1924
Output (English): What is the date when 1924 Imperial Airways de Havilland DH.34 crash happened?