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.
Example: Sentence 1: Jon saw his friend Tom coming out of the grocery store with a bag of fruit. Sentence 2: Tom had been shopping for fruit to give Jon.
Example solution: N
Example explanation: Tom's reason for buying the fruit is not known.

Problem: Sentence 1: A woman is holding a boy in a swimming pool. Sentence 2: A boy walks across a frozen pool with a woman.

Solution: C