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: And after the amazing experience of seeing history come to life, people would obviously want a souvenir. Sentence 2: People needed souvenirs when they went on vacation.
Example Output: no

Example Input: Sentence 1: This year, Beatty may turn down the opportunity to play Robert F. Kennedy in a campaign, then become a power broker. Sentence 2: Beatty will likely play the role of Robert F. Kennedy and turn down the prospect of becoming a power broker.
Example Output: yes

Example Input: Sentence 1: Poirot nodded.  Sentence 2: Poirot shook his head.
Example Output:
yes