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: Waves are additive. Sentence 2: Waves are not additive.
yes

Sentence 1: Israel had a nervous breakdown when Menachem Begin evicted just 5,000 settlers from the Sinai during the early '80s. Sentence 2: Begin evicted 50,000 settlers from China in the 80's.
yes

Sentence 1: She unhooked it with a steady hand. Sentence 2: She had steady hands.
yes