Premise: "A skateboarder has kicked his board up onto its back wheels in an indoor skate center."\nHypothesis: "A skater is in a contest."\nDo we know that the hypothesis entailed by the premise?
Let's be accurate as possible. Think before you answer.
it is not possible to tell
Not all indoor skateboarding has to be part of a contest.

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So, the answer is it is not possible to tell