In this task, you're given a pair of sentences, sentence 1 and sentence 2. Your job is to choose whether the two sentences clearly agree (entailment)/disagree (contradiction) with each other, or if this cannot be determined (neutral). Your answer must be in the form of the letters E, C, and N respectively.

Sentence 1: A woman wearing a dark skirt and a t-shirt is facing a bathroom sink. Sentence 2: A woman is about to puke.
N

Sentence 1: Two girls in shorts are holding hands at a pool. Sentence 2: Two boys stand side by side at a pool.
C

Sentence 1: A man playing an acoustic guitar and singing with a group of people behind him including a woman who is singing along. Sentence 2: A music group is performing at a concert venue.

N