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: The black dog and the white dog seem to be getting ready to fight. Sentence 2: The black dog and the white dog seem threatening towards each other
C

Sentence 1: A little boy trying to brush a woman's hair. Sentence 2: The boy wanted to brush his sister's hair.
N

Sentence 1: A woman dressed in black with shopping bags is waiting on the sidewalk. Sentence 2: A woman waiting for a taxi on the sidewalk.

N