Task: Question Generation
Input (English): Context : The St. Stephen's College massacre (Chinese: 聖士提反書院大屠殺) involved a series of acts of extreme cruelty committed by the Imperial Japanese Army on 25 December 1941 during the Japanese occupation of Hong Kong at St. Stephen's College. 
Answer : 25 December 1941
Output (English): The point in time of St. Stephen's College massacre was what?