You are on your way to the city of truths. Before you the road splits in two. Right in between the two roads is a guide. The guide tells you that one path leads to the city of truth, and one to the city of lies. The guide smiles, and you know that something is off ... He can lie, but he can also tell you the truth. It is up to you to ask him the one question that gives you the answer you need.
What do you ask him in order to know which of the 2 roads lead to the city of truth?
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