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 is the father of emma on friends?
answer:
Which character is the father of emma on friends?


question:
When did the way you look tonight come out?
answer:
When did Fred Astaire's version of The Way You Look Tonight come out?


question:
Where is the ozone layer located in the atmosphere?
answer:

In what area is the ozone layer located in the atmosphere?