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: Obama is extreme and leftwing. Sentence 2: Obama is part of the extreme leftwing.

A: 5
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Q: Sentence 1: Among three major candidates, Schwarzenegger is wining the battle for independents and crossover voters. Sentence 2: Schwarzenegger picks up more independents and crossover voters than Bustamante.

A: 3
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Q: Sentence 1: Microsoft acquired Virtual PC when it bought the assets of Connectix earlier this year. Sentence 2: Microsoft acquired Virtual PC from its developer, Connectix, earlier this year.

A:
4
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