Please answer the following question by reasoning step-by-step. Premise: "Seven climbers are ascending a rock face whilst another man stands holding the rope."\nBased on this premise, can we conclude that the hypothesis "The climbers use safety measures." is true?\nOptions:\n- yes\n- it is not possible to tell\n- no. Step-by-step reasoning:
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Just a man stands holding a rope for rock climbers doesn't mean safety measures are being used. So the answer is it is not possible to tell.
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