Premise: "Horseback riders file down a wooded path."\nHypothesis: "The amateur riders wear helmets for safety."\nDo we know that the hypothesis entailed by the premise?
Let's be accurate as possible and think first.
it is not possible to tell
Not all horseback riders are an amateur and file down a path does not imply to wear a helmet.

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The answer is it is not possible to tell