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]: When did the zulu arrive in south africa?
[EX A]: When did the zulu people arrive in south africa?

[EX Q]: Where are the blood vessels of the skin located?
[EX A]: In which layer of skin are the blood vessels of the skin located?

[EX Q]: When was back to the future released on vhs?
[EX A]:
When was the TV show back to the future first released on vhs?