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: Natalia didn't comment, though her expression was even more dour than usual. Sentence 2: Natalia was quiet and sad.
yes

Sentence 1: I've sprained something. Sentence 2: My ankle hurts a little bit.
no

Sentence 1: However, the population of Chios has also experienced very turbulent times, particularly in 1822, when an estimated 20,000 people were massacred by Ottoman forces, following an unsuccessful uprising against Ottoman rule just after the creation of the Greek state in 1821. Sentence 2: Ottomans killed about twenty thousand people in 1822 in Chios.

yes