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.

Ex Input:
Who is the highest paid actor in big bang theory?

Ex Output:
Based on show salary, who is the highest paid actor on Big Bang Theory?


Ex Input:
Where is the x factor final 2017 filmed?

Ex Output:
In what building is the x factor final 2017 filmed?


Ex Input:
Sydney is on the bank of which river?

Ex Output:

North Sydney is on the bank of which river?