

  IN AN UNDERGROUND STATION

  A. Excuse me.
      Is this the eastbound train?
  B. That's right.
  A. I'm trying to get to Victoria.
      Is it the right platform?
  B. Yes, it is.
      Be careful though.
      You want the District line train.
      Don't get on the Picadilly.
  A. How do I tell the difference?
  B. It tells you on the front.
      You want a tall train.
      Not a low one.
  A. Why the difference in size?
  B. The District only goes on the surface.
      The Piccadilly goes under ground.
  A. I see.
  B. Look.
      Your train's the next in.
      It's shown on the board.
      :
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