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.

Example Input: 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.
Example Output: N

Example Input: Sentence 1: Two men at a concert are screaming. Sentence 2: The men are taking a nap at the concert.
Example Output: C

Example Input: Sentence 1: A man is standing outside a building dressed in black and white while holding a white helmet. Sentence 2: The man is outside.
Example Output:
C