Definition: 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: To make such a trip you will need either a Chinese visa or a special group-tour permit for Tibet. Sentence 2: You will not need any documentation of any kind to make such a trip.
Output:
yes