Given the task definition and input, reply with output. 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: But the data on marine casualties indicated that accidents were often caused, not by deficiencies in the vessels or other factors, but by human error. Sentence 2: The data on marine casualties showed that accidents were often caused machine failure.
yes