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: Two boys stand in front of vending machines. Sentence 2: Two girls sell lemonade.
C

Sentence 1: A male tennis player runs for a shot. Sentence 2: A boy is running after a tennis shot his friend made.
N

Sentence 1: A man sits at a table outside and looks toward the horizon. Sentence 2: A man is walking on a sidewalk.

C