answer: #Person2# tells #Person1# how to get to the library by following the street until the second stoplight.
documents: #Person1#: Excuse me. Could you tell me how to get to the library?
  #Person2#: Of course. It's on Memorial Avenue.
  #Person1#: On Memorial Avenue?
  #Person2#: Right. You know where that is?
  #Person1#: I'm afraid I don't. I'm quite new in town.
  #Person2#: Well, do you know where the post office is?
  #Person1#: No, I don't. But I do know where the shopping mall is.
  #Person2#: That won't help us. Let me see now. . . Why don't you follow this street, Elm, until, you get to the second stoplight.
  #Person1#: Well, thank you very much, I hope I can find it.