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.

Example Input: Sentence 1: Waves are additive. Sentence 2: Waves are not additive.
Example Output: yes

Example Input: Sentence 1: Time warns that recession might be imminent, caused by high consumer debt and sluggish Asian economies. Sentence 2: Slow Asian economies might be a contributing factor in a looming recession.
Example Output: yes

Example Input: Sentence 1: Certain information may be prohibited from general disclosure by federal, state, or local laws or regulations. Sentence 2: Changes to the rules about release of information should be directed to the responsible agencies.
Example Output:
no