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 woman is feeding an aardvark. Sentence 2: A woman is chopping up garlic.

A: 0
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Q: Sentence 1: Attack on Nato base in Afghanistan kills 15 Sentence 2: Aid workers freed in Afghanistan raid

A: 1
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Q: Sentence 1: A small dog runs through an obstacle course. Sentence 2: A small dog jumping over an obstacle.

A:
4
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