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.

When did the facebook messenger app come out?
When was the facebook messenger app originally developed as Facebook Chat?

Who does lady gaga play in american horror story?
Who does Lady Gaga play in American Horror Story: Hotel?

What is the white part of your nail?

What is the white, crescent part of your nail?