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.

Q: 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.

A: no
****
Q: Sentence 1: 30% is a decrease in concentration or deposition compared to current conditions (an improvement) Sentence 2: There has been a decrease compared to current conditions.

A: yes
****
Q: Sentence 1: Red watched them walk away and when he turned he saw Slim peering cautiously out from among the briars of a hedge. Sentence 2: Red observed the group leaving and spotted someone else.

A:
yes
****