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 days does it take an embryo to implant?

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


Question: What idea was used to justify u.s. foreign policy during the cold war era?

Answer: What ideas were used to justify u.s. foreign policy during the cold war era?


Question: Who plays ted how i met your mother?

Answer:
Who plays Ted on screen, in How I Met Your Mother?