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: The broader Standard & Poor's 500 Index <.SPX> was up 9.69 points, or 0.98 percent, at 994.53. Sentence 2: The tech-laced Nasdaq Composite Index <.IXIC> gained 18.35 points, or 1.13 percent, to 1,646.02.
[A]: 1


[Q]: Sentence 1: David @OmSigDAVID, I think Santorum's more likely than Gingrich. Sentence 2: @sozobe, I think Santorum's more likely than Gingrich.
[A]: 5


[Q]: Sentence 1: Quartet calls on Israelis, Palestinians to end irritants Sentence 2: Occupation to confiscate 30 dunums of Palestinian land in Deir Estia
[A]:
1


