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.

Sentence 1: There is a soft-focus Monica on the cover, and there are softball questions inside (You signed your first book yesterday. Sentence 2: You signed your second book.
yes