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 surfer is in the air while surfing in the ocean, and there is a foamy wave crashing everywhere. Sentence 2: A surfer is surfing in the ocean.
Example Output: C

Example Input: Sentence 1: A boy in an orange shirt with blue trim is smiling. Sentence 2: A boy in an orange shirt is smiling.
Example Output: N

Example Input: Sentence 1: A group of people stand on a dock watching a boat. Sentence 2: People are sleeping inside.
Example Output:
C