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: Although we attempted to be as thorough as possible within the scope of our study, we recognize that more work in this area remains to be done, including a more in-depth study of individual practices. Sentence 2: More work is not necessary. 
Output:
yes