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]: Who achieved a victory at the battle of marathon?
[A]: What country achieved a victory at the battle of marathon?


[Q]: Who sang the song cotton fields back home?
[A]: Who sang the song cotton fields back home in 1940?


[Q]: What year was fiddler on the roof made?
[A]:
When was the Fiddler on the Roof musical written?