Task: Question Generation
Input (English): Context : Krishnapur massacre (Bengali: কৃষ্ণপুর হত্যাকান্ড) took place on 18 September 1971 in Krishnapur and neighbouring villages in the district of Sylhet in Bangladesh. 
Subject : Krishnapur massacre 
Relation : point in time
Output (English): On what date did Krishnapur massacre take place?