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: But in the final five minutes, I raised my bid to $250, then $275, then $300, and finally won the auction, exhilarated by my victory. Sentence 2: I lost the auction, sadly.
Example Output: yes

Example Input: Sentence 1: Rural carriers furnish their own vehicles and provide all maintenance, repairs, and fuel, for which they are paid an allowance. Sentence 2: It is very cheap for rural carriers to maintain their vehicles, so they end up making a profit with their allowance fee.
Example Output: no

Example Input: Sentence 1: Brought a message from Mrs. Vandemeyer, I suppose?" 91 "Not exactly," said Tuppence. Sentence 2: I'm sure you didn't bring a message from anybody. 
Example Output:
yes