instruction:
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.
question:
Who sings i wanna be a billionaire?
answer:
Who sings the song "Billionaire"?


question:
When do they find the prison in walking dead?
answer:
What season do they find the prison in walking dead?


question:
When does a study in scarlet take place?
answer:

What year does a study in scarlet primarily take place?