Evaluate the similarity between them and classify them into classes from 0-5 as follows:
0 : The two sentences are completely dissimilar.
1 : The two sentences are not equivalent, but are on the same topic.
2 : The two sentences are not equivalent, but share some details.
3 : The two sentences are roughly equivalent, but some important information differs/missing.
4 : The two sentences are mostly equivalent, but some unimportant details differ.
5 : The two sentences are completely equivalent, as they mean the same thing.

Q: Sentence 1: A white bus with the word Julia is near water and a big ship. Sentence 2: A white bus with water and a barge in the background.

A: 4
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Q: Sentence 1: A dog is jumping over a barrier at a agility competition. Sentence 2: A dog jumping over an obstacle course fence.

A: 4
****
Q: Sentence 1: The tech-heavy Nasdaq Composite Index .IXIC was off 0.11 percent, or 1.78 points, at 1,594.13. Sentence 2: The broader Standard & Poor's 500 Index .SPX was down 0.04 points, or 0 percent, at 971.52.

A:
1
****