Instructions: 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: Sentence 1: 8. Traditionally, retirement income was characterized as a three-legged stool comprising Social Security, employer pensions, and individuals' own saving for retirement. Sentence 2: Retirement income often comes from several different sources.
Output:
yes