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: Lummox was his first brill, a gift from Ca'daan, and he didn't want to lose her. Sentence 2: Ca'daan gave him Lummox.
Example Output: yes

Example Input: Sentence 1: And you think that will tell you anything? He gave a short disagreeable laugh. Sentence 2: You know they will spill all the details in you lap?
Example Output: yes

Example Input: Sentence 1: Their responses are all pre-programmed.' Sentence 2: The responses were programmed by someone.
Example Output:
yes