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]: Leader who declared war on russia to support austria hungary?
[A]: Political leader who declared war on russia to support austria hungary?

[Q]: Who won the 2017 british open golf tournament?
[A]: Which person won the 2017 british open golf tournament?

[Q]: Who was the singing voice of elsa in frozen?
[A]:
Who was the singing voice of Elsa in the original English version of Frozen?