(told by my niece)
Yankel the carpenter had a job to do at Truthtown.
When he arrived at a fork in the road where it split to Truthtown on one side and Liarville on the other, he saw to his dismay that someone had stolen the road sign indicating which was which.
Fortunately, there was a man at the fork who had clearly come from one of the towns.
Unfortunately, cruel King Xerxes had passed a couple of decrees that would make it a bit difficult:
1) Truthtown residents may only tell the truth.
2) Liarville residents may only tell lies.
3) Travelers may only ask one question a day (no compound questions).
Under these constraints, what question should Yankel ask to determine the road to take?