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 cutting a leak. Sentence 2: A woman is slicing a leek.

A: 4
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Q: Sentence 1: South Africa has the world's highest caseload with 4.7 million people infected with HIV or AIDS. Sentence 2: With 4.7 million people infected with HIV or AIDS, South Africa has the world's highest AIDS caseload.

A: 5
****
Q: Sentence 1: And yet, the Titanic story is the one that holds up to scrutiny of the evidence. Sentence 2: The new study shows that the Titanic story does not stand up to scrutiny imo.

A:
2
****