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.

[EX Q]: How many layers are there in osi model?
[EX A]: How many layers are there generally considered to be in the OSI model?

[EX Q]: When did the draft start for vietnam war?
[EX A]: When did the first lottery for the draft start for the vietnam war?

[EX Q]: When was the last year we had a total eclipse of the sun?
[EX A]:
When was the last year a total eclipse of the sun was visible in the United States?