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: They held it for only a year before returning it to Spain in exchange for Florida, but during this period trade was opened up to additional markets, notably the North American colonies. Sentence 2: They had to make an exchange for Florida.
Output:
yes