Premise: "A man and a woman in a blue dress are playing tennis."\nHypothesis: "A married couple share their love of tennis."\nDo we know that the hypothesis entailed by the premise?
Step-by-step reasoning:
it is not possible to tell
The man and woman may or may not be married and they don't necessarily share their love of tennis just because they are playing tennis.

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Thus, the answer is it is not possible to tell