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 man drove his car. Sentence 2: A man is driving a car.

A: 4
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Q: Sentence 1: A woman slices tofu. Sentence 2: A woman is cutting tofu.

A: 5
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Q: Sentence 1: A toy train is striking a toy car. Sentence 2: A toy train strikes a toy car.

A:
5
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