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.

[Q]: Sentence 1: A man with black hair and gray pants is standing holding a helmet and looks very dirty. Sentence 2: A man is not clean
[A]: C


[Q]: Sentence 1: An African American man, wearing a sweatshirt and coat, walking in a city. Sentence 2: A man walks wearing a coat.
[A]: C


[Q]: Sentence 1: A man in a red jacket mountain climbing an icy rock mountain. Sentence 2: The mountain climber makes his first ascent.
[A]:
N