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: Man in his boxers carving a pumpkin. Sentence 2: A man is using a knife.
Example Output: C

Example Input: Sentence 1: A person is doing tricks on a bicycle in a city. Sentence 2: Someone is doing tricks on a bicycle in a city.
Example Output: C

Example Input: Sentence 1: A dog running in the grass. Sentence 2: The dog is chasing a frog.
Example Output:
N