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: Fun, smart, beautiful, but my girlfriend just won't give me any space. Sentence 2: My girlfriend knows that I feel she isn't giving me enough space.
Example Output: no

Example Input: Sentence 1: Citicorp could have agreed to market Travelers insurance or Salomon brokerage services, and vice versa, without actually becoming one company. Sentence 2: Citicorp had the opportunity to market the insurance companies without merging.
Example Output: yes

Example Input: Sentence 1: well as a matter of fact i was thinking about that the other day and uh i really don't know the answer um Sentence 2: People don't know the answer for that.
Example Output:
no