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.

Example Input: Sentence 1: It also gives guidance to the manager who, in reviewing completed case studies, wants to assess their strengths. Sentence 2: The managers frequently are reviewing case studies.
Example Output: no

Example Input: Sentence 1: Taking Steps to Meet Current and Emerging Human Capital Challenges Sentence 2: Human capital challenges cannot  be met.
Example Output: yes

Example Input: Sentence 1: The Daily Mail Monday quoted the pendant's inventor, chiropractor Dr. Charles Brown, as saying that it contains a 'magical configuration' of quartz and other crystals which deflect electromagnetic radiation from modern office equipment--and counter 'negative vibes. Sentence 2: Dr. Charles Brown invented a pendant to protect its wearer from negative vibes.
Example Output:
yes