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: Saturated fat is still evil. Sentence 2: All saturated fats are good for you.
Example Output: yes

Example Input: Sentence 1: The most drastic way is to allow only one candidate. Sentence 2: One candidate might be a politician.
Example Output: no

Example Input: Sentence 1: Giza was the site of a royal burial ground from the days of the Early Empire and the desert landscape is dotted with numerous mud brick tombs and mastabas (stone tombs with flat roofs), though they are by no means as impressive as the pyramids themselves. Sentence 2: There are no mud brick tombs anywhere in the desert. 
Example Output:
yes