Here's a riddle for you...

tu might've heard this one before, though. It's kinda common.

So, you're on your way to Truthville to find a treasure that is rumored to be there, when tu come across a fork in the road. tu know that one road leads to Truthville, but the other leads to Liarsburg. tu don't know which road leads where, though. tu spot one man standing at the spot where the road splits. tu are certain that he is from either Liarsburg o Truthville, but tu don't know which. tu go over and talk to him, and he agrees to answer one question. tu know that anyone from Truthville always tells the truth, no matter what, but anyone from Liarsburg always lies, no matter what.

The pregunta is: What do tu ask the man?