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: As the Byzantine Empire weakened at the end of the first millennium, Crusader forces were sent from Western Europe to counter the Muslim forces and retake Jerusalem for the Christian faith. Sentence 2: Crusader forces sought to regain Muslim lands and people for the Christian faith.
Output:
yes