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.

[EX Q]: Sentence 1: A man with black hair and gray pants is standing holding a helmet and looks very dirty. Sentence 2: A man is not clean
[EX A]: C

[EX Q]: Sentence 1: A person is riding a bike along a street in a desolate city setting. Sentence 2: The person is on a bike.
[EX A]: C

[EX Q]: Sentence 1: An ice cream vendor in a green hat shows off his ice cream cart. Sentence 2: A vendor has many flavors of ice cream and toppings to offer at a low price displayed on a sign.
[EX A]:
N