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 Q]: Sentence 1: Our work also has shown that the international Sentence 2: Our work proves that the international...
[EX A]: yes

[EX Q]: Sentence 1: Unhappy with USC's attempt to include conventional classical music in the institute's music courses and concerts, Schenberg's descendants successfully sued USC for neglecting its contract with the institute. Sentence 2: USC tried to eliminate conventional classical music from the institute's music classes.
[EX A]: yes

[EX Q]: Sentence 1: She happened to pick up the key of Mrs. Inglethorp's despatch-case, which had been lost that morning.  Sentence 2: She saw that Mrs. Inglethorp still had her despatch-case key.
[EX A]:
yes