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: Originally the post was simply an inter-city letter service. Sentence 2: The post used to be just for inter-city communications.

Output: yes


Input: Consider Input: Sentence 1: One rather formidable group of mailers whose members will benefit mightily from the Commission's recommendations, the periodicals mailers, pointed out in a press statement that the overall average increase for First-Class mail was much smaller than the average increase for mail their members send. Sentence 2: Periodicals mailers never say a word in the press statements.

Output: yes


Input: Consider Input: Sentence 1: Edinburgh emerged as Scotland's main political center and was declared by James III (1460 1488) to be  the principal burgh of our kingdom.  Sentence 2: Edinburgh emerged as the political center of Scotland and was declared to be the principal burgh of the kingdom.


Output: yes