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A: Can you describe the robbery you saw?
B: It happened right here in front of the bank.
A: Can you describe the suspect?
B: He was tall, wearing sunglasses and a Yankees baseball cap.
A: Did he have any weapons?
B: I didn't see a gun, but he had his hand in his pocket.
A: So he could have had a gun?
B: I suppose so.
A: Did you see which way the suspect went?
B: I was so scared, and was shaking, but I think he went towards the train station.
A: Could you pick the suspect out of a lineup?
B: Only if I'm sure that he can't see me.