Instructions: 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.
Input: Sentence 1: A man is writing on a chalkboard full of paragraphs with a pencil in his ear. Sentence 2: A professor shows slides during the class lecture.
Output:
C