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 wrote the song be still and know i am?
answer:
Who wrote the 2007 song based on Psalm 46:10 be still and know that i am?


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


question:
Where was the nuclear test ban treaty signed?
answer:

Where was the Partial Test Ban Treaty signed?