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.

What causes the tide to come in and out?
What large mass causes the tide to come in and out?

How many days does it take an embryo to implant?
How many days does it most likely take for a human embryo to implant?

Who is the son of deucalion and pyrrha?

Who was the first son of Deucalion and Pyrrha?