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: activities calculated with data collected in 1985. Sentence 2: The data was collected in 1985
Example Output: yes

Example Input: Sentence 1: I assure you that you need not let it trouble you.  Sentence 2: It may bother someone else. 
Example Output: no

Example Input: Sentence 1: Bradley isn't asking us to overcome that skepticism. Sentence 2: Bradley is begging us to overcome that skepticism.
Example Output:
yes