Q: 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.
Context : Krishnapur massacre (Bengali: ) took place on 18 September 1971 in Krishnapur and neighbouring villages in the district of Sylhet in Bangladesh.
Answer : 18 September 1971
A:
On what date did Krishnapur massacre take place?