Premise: "Two football teams competing in a football game outside."\nHypothesis: "Two yellow teams are competing in football."\nDo we know that the hypothesis entailed by the premise?
Let’s work this out in a step by step way to be sure we have the right answer.
it is not possible to tell
Two football teams is not necessarily the same as two yellow teams.

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So, the answer is it is not possible to tell