Please answer the following question by reasoning step-by-step. If "Snowboarder doing a trick with his lib tech ski board mountains in the background judges or safety personal in the background." does that mean that "A man is riding a bobsled down the track."?\nOptions:\n- yes\n- it is not possible to tell\n- no. Step-by-step reasoning:
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A man cannot be using a bobsled and a ski board at the same time. So the answer is no.
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