I'll give you a question, please answer with step-by-step reasoning process.
Test for natural language inference.\nPremise: "One boy is standing on a roof while another boy looks up at him."\nHypothesis: "A boy is about to jump off the roof."\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
Standing on a roof does not imply being about to jump off the road.

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