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.

Input: Consider Input: Sentence 1: Lawyers discount their usual rate by 20% after that. Sentence 2: Lawyers always charge the same amount, even after that.

Output: yes


Input: Consider Input: Sentence 1: We are asked to feel especially sorry for Richard Nixon, who endured vilification from the New York Times and Washington Post that was continual, venomous, unscrupulous, inventive, and sometimes unlawful. Sentence 2: We are told that several newspapers subject Richard Nixon to persistent negative coverage.

Output: yes


Input: Consider Input: Sentence 1: But Sir James was already on the topmost stair. Sentence 2: They were telling Sir James to come upstairs, not realizing he was already there.


Output: no