Premise: "Group wearing yellow and orange shirts riding mountain bikes."\nHypothesis: "A group in matching shirts rides mountain bikes."\nIs the hypothesis entailed by the premise?\nOptions:\n- yes\n- it is not possible to tell\n- no
A step-by-step solution is:
yes
A group in matching shirts refers to the group wearing yellow and orange shirts riding mountain bikes.

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So, the final answer is yes