answer: #Person1# asks Peter not to sit on the grass nor to smoke because there're notes.
documents: #Person1#: Take care, Peter. Don't run so fast. Are you tired?
  #Person2#: Oh, yes. May I sit on the grass?
  #Person1#: No, you mustn't sit on the grass. Don't you see the notes?
  #Person2#: Yes, I can see it. But what's on it?
  #Person1#: It says Keep off the grass!
  #Person2#: Well, there's a bench under the tree. We can sit there.
  #Person1#: Be careful. You can't smoke here.
  #Person2#: Why not?
  #Person1#: Can't you see the notes there? It says No smoking here.