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.
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Question: How many layers are there in osi model?

Answer: How many layers are there generally considered to be in the OSI model?


Question: Who demonstrated that a reflex could be conditioned to a neutral stimulus?

Answer: Who is best-known for demonstrating that a reflex could be conditioned to a neutral stimulus?


Question: When was the last time a lunar eclipse occurred?

Answer:
When was the last time a Penumbral lunar eclipse occurred?