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.

Example Input: Where are the blood vessels of the skin located?
Example Output: In which layer of skin are the blood vessels of the skin located?

Example Input: Who achieved a victory at the battle of marathon?
Example Output: What country achieved a victory at the battle of marathon?

Example Input: Where did the superstition saying knock on wood come from?
Example Output:
Where do some explain the superstition saying knock on wood comes from involving protector beings trapped in trees and tapping wood for protection?