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.

Example Input: Sentence 1: Before 1966, we had a motley collection of teen magazines and fan club publications. Sentence 2: Before 1966 there were no magazines or publications.
Example Output: yes

Example Input: Sentence 1: This is not an artificial landscape supported solely by tourism; today's working farms help keep the Lake District vital and distinctive. Sentence 2: The farms in the Lake District supply the area with a surplus of food and materials.
Example Output: no

Example Input: Sentence 1: To make symbol and thing congruent, all must be invoked with the true and secret name of the universe.  Hanson suddenly remembered legends of the tetragrammaton and the tales of magic he'd read in which there was always one element lacking. Sentence 2: Hanson had never read any stories about magic or the tetragrammaton before.
Example Output:
yes