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 dog playing in the waves with a ball. Sentence 2: A dog on its back in the grass.
Example Output: C

Example Input: Sentence 1: A man in a tank top stands next to a chrome door. Sentence 2: a man is taking a photo of a shark while deep sea diving
Example Output: C

Example Input: Sentence 1: Three people pop champagne corks, sending champagne unto onlookers. Sentence 2: People discussing politics.
Example Output:
C