You will be given a definition of a task first, then some input of the task.
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 : The Massacre of the Latins (Italian: Massacro dei Latini; Greek: ) was a large-scale massacre of the Roman Catholic (called ''Latin'') inhabitants of Constantinople, the capital of the Byzantine Empire, by the Eastern Orthodox population of the city in April 1182.
Answer : April 1182
Output:
What is the date when Massacre of the Latins happened?