It's an easy riddle, similar to this one-
On your travels across India, you come to a road which has a fork in it. One path leads to the village of truth, where all inhabitants constantly speak the truth and act honestly, the other path leads to the village of liars, where all inhabitants constantly tell lies and act dishonestly.
A man is standing at the fork of the road. You do not know whether he comes from the village of truth or the village of liars. What question do you ask him to ensure you end up in the village of truth?