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.

Ex Input:
Sentence 1: Lummox was his first brill, a gift from Ca'daan, and he didn't want to lose her. Sentence 2: Ca'daan gave him Lummox.

Ex Output:
yes

Ex Input:
Sentence 1: Home Town , by Tracy Kidder (Random House). Sentence 2: Home Town was written by Tracy Kidder

Ex Output:
yes

Ex Input:
Sentence 1: Despite the roar of the traffic on the voies express, you can take delightful walks along the banks and rest quietly on benches beneath poplar and plane trees. Sentence 2: Pedestrians can rest on benches beneath poplar and plane trees.

Ex Output:
yes