A traveler on his way to Miami reaches a road junction where he can turn left or right. He knows that only one of the two roads leads to Miami but unfortunately he does not know which one. Fortunately he sees two twin-brothers standing at the road junction and he decides to ask them for directions. The traveler knows that one of the two brothers always tells the truth and the other one always lies. Unfortunately he does not know which one always tells the truth and which one always lies. How can the traveler find out the way to Miami by asking just one question to one of the two brothers?
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