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: But the data on marine casualties indicated that accidents were often caused, not by deficiencies in the vessels or other factors, but by human error. Sentence 2: The data on marine casualties showed that accidents were often caused machine failure.

Output: yes


Input: Consider Input: Sentence 1: Quality-of-life drugs offer not just the pleasing possibility that you can do something about impotence, baldness, blackened toenails. Sentence 2: Quality life drugs cannot help those suffering from impotence.

Output: yes


Input: Consider Input: Sentence 1: But the blade stopped. Sentence 2: The blade was stopped by a metal buckler, thrown as a reflex by the experience warrior.


Output: no