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 young black man is skateboarding on a smooth concrete surface. Sentence 2: A black man is sleeping on the skateboard.
C

Sentence 1: Costumed kids on a jungle gym. Sentence 2: Kids are at an outdoor haloween party.
N

Sentence 1: The dog walks on the high plank. Sentence 2: Two dogs are walking.

C