answer: #Person2# shows #Person1# the way to the post office.
documents: #Person1#: Excuse me, can you tell me where the post office is?
  #Person2#: It's on the Fifth Avenue.
  #Person1#: I'm afraid I don't quite understand.
  #Person2#: I see. You're a stranger here. Walk two blocks ahead, then turn left. You can't miss it.