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.

Example Input: What idea was used to justify u.s. foreign policy during the cold war era?
Example Output: What ideas were used to justify u.s. foreign policy during the cold war era?

Example Input: When did the song american pie come out?
Example Output: When was the original release date for the song American Pie?

Example Input: Who kissed a frog and it turned into a prince?
Example Output:
In the Brothers Grimm fairy tale, who kissed a frog and it turned into a prince?