You will be given a definition of a task first, then some input of the task.
In this task you will be given an answer to a question. You need to generate a question. The answer given should be a correct answer for the generated question.

A large gypsum deposit at Montmartre in Paris led 'calcined gypsum' (roasted gypsum or gypsum plaster) to be commonly known as 'plaster of Paris'.
Output:
how did plaster of paris get its name