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: People gathered together on a city street. Sentence 2: People gather outside
Example Output: C

Example Input: Sentence 1: Two young men in long jackets stand under an umbrella in front of a brick wall with graffiti. Sentence 2: The artists admire their painting at the exhibit.
Example Output: C

Example Input: Sentence 1: A man's upper torso in Union Blue waving with a flag in background and Confederate Gray behind him waving as well. Sentence 2: Someone is waving a flag.
Example Output:
C