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.

Input: Consider Input: When did the beatles stop touring and why?

Output: When did the Beatles stop touring?


Input: Consider Input: What is the most famous part of the sistine chapel?

Output: What are the most famous frescos of the sistine chapel?


Input: Consider Input: When did they start saying the pledge of allegiance in schools?


Output: When did they first start saying the pledge of allegiance in schools?