Premise: "A boy jumps off a tan rock."
Hypothesis: "A boy is jumps off a white rock."
Do we know that the hypothesis entailed by the premise? Stream of thoughts:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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The boy either jumps off a tan rock or a white rock.
Therefore, the answer is no.