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: on national TV Sentence 2: on foreign TV.
Example Output: yes

Example Input: Sentence 1: The crowds thinned and the tent city rose around them, mostly empty at this time in the morning. Sentence 2: It was really busy that morning.
Example Output: yes

Example Input: Sentence 1: Quite right. Inglethorp nodded.  Sentence 2: Inglethorp signaled his agreement.
Example Output:
yes