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 Q]: Who has the most assist in the nba?
[EX A]: Who has had the most assists in a single game in the NBA?

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

[EX Q]: Who was the original writer of stand by me?
[EX A]:
Who was the original writer of the song "Stand by Me"?