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.

Q: Sentence 1: A group of dancers takes their bows. Sentence 2: A dance group bows after dancing.

A: C
****
Q: Sentence 1: A man in a black shirt and jeans stands at a microphone holding a guitar. Sentence 2: The man is performing.

A: C
****
Q: Sentence 1: A truck has just crashed into the back of another truck. Sentence 2: A red truck has struck a blue truck.

A:
N
****