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: On the previous day, the prisoner had purchased strychnine at the village chemist's shop, wearing a disguise by means of which he hoped to throw the onus of the crime upon another man ”to wit, Mrs. Inglethorp's husband, of whom he had been bitterly jealous.  Sentence 2: The prisoner purchased poison at the village's chemist shop.

Output: yes


Input: Consider Input: Sentence 1: A year later, in June 1840, came the British retaliation, beginning the first of the so-called Opium Wars. Sentence 2: The British were the cause of the Opium Wars.


Output: no