Test for natural language inference.\nPremise: "Five dogs are racing."\nHypothesis: "Five dogs are pulling a sled in a race across alaska."\nIs the hypothesis entailed by the premise?\nOptions:\n- yes\n- no\n- it is not possible to tell
A step-by-step solution is:
it is not possible to tell
Racing does not imply pulling a sled in a race across Alaska.

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So, the final answer is it is not possible to tell