Premise: "Woman in sunglasses accompanied by a man in a safari outfit."\nHypothesis: "A man and a woman are going to a costume party."\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
Woman in sunglasses accompanied by a man in a safari outfit does not mean that they are going to a costume party.

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So, the answer is it is not possible to tell