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 white dog is trying to catch a ball in midair over a grassy field. Sentence 2: A man threw a red ball to his dog.
N

Sentence 1: children sitting on the floor while one boy gazes off into space. Sentence 2: Kids are napping.
C

Sentence 1: A team of dogs are pulling a sled over snow. Sentence 2: A team of reindeer is pulling the sleigh.

C