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 swims with a stick. Sentence 2: A dog is swimming with a stick.
C

Sentence 1: Man and woman sort clothes together. Sentence 2: A man wiping sweat off his forehead.
C

Sentence 1: A man with tools in both hands is focused on his work. Sentence 2: A man is concentrating.

C