I'll give you a question, please answer with step-by-step reasoning process.
Test for natural language inference.\nPremise: "A man in a blue outfit works on a train."\nHypothesis: "A repairman is in the rail yard."\nIs the hypothesis entailed by the premise?\nOptions:\n- yes\n- no\n- it is not possible to tell

it is not possible to tell
Not all men that work on a train is a repairman.

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