Premise: "A group of anime cosplayers sitting in a hall."\nHypothesis: "Costumed fans gather together."\nIs the hypothesis entailed by the premise?\nOptions:\n- yes\n- it is not possible to tell\n- no
Let’s work this out in a step by step way to be sure we have the right answer.
yes
Cosplayers are costumed fans in group which mean they have gather together.

.

So, the final answer is yes