instruction:
In this task, you're given a pair of sentences, sentence 1 and sentence 2. Your job is to determine if the two sentences clearly agree/disagree with each other, or if this can't be determined. Indicate your answer as yes or no respectively.
question:
Sentence 1: Waves are additive. Sentence 2: Waves are not additive.
answer:
yes


question:
Sentence 1: I'm Jane's first cousin, he explained, returning the lawyer's keen gaze. Sentence 2: "I am Jane's favourite cousin" he said to the lawyer staring at him.
answer:
no


question:
Sentence 1: Many stores will pack and ship purchases. Sentence 2: The stores want to help you as best they can. 
answer:

no