In this task, you're given an ambiguous question (which can be answered in more than one way). Your task is to write a question that clarifies the given question in such a way that the generated question has one unique answer.

[Q]: When was the book of exodus in the bible written?
[A]: When was the book of exodus in the bible's initial composition written?


[Q]: What is the most famous part of the sistine chapel?
[A]: What are the most famous frescos of the sistine chapel?


[Q]: Who was originally cast for back to the future?
[A]:
Who was originally cast as Marty McFly for Back to the Future?