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.

Sentence 1: A brown dog is running along a grassy stretch divided by strings. Sentence 2: A black cat is running along a grassy stretch divided by strings.
C

Sentence 1: A band consisting of three men and a woman perform in an alley with a van in the background. Sentence 2: A band is having an impromptu practice in front of their tour van before a concert.
N

Sentence 1: A construction worker in overalls and a yellow construction hat shovels dirt into a wheelbarrow. Sentence 2: A man is at work
C