Premise: "Woman in orange shirt is holding up a pokeball to a girl who is dressed up as a pokemon."\nHypothesis: "A woman is at a anime convention."\nDo we know that the hypothesis entailed by the premise?
Let's think step by step below.
it is not possible to tell
A woman with a pokeball is not necessarily at an anime convention.

.

The final answer: it is not possible to tell