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.

Example Input: Sentence 1: A woman slices tofu. Sentence 2: A woman is cutting tofu.
Example Output: 5

Example Input: Sentence 1: NYPD Twitter Outreach Backfires Badly Sentence 2: NYPD's twitter campaign backfires
Example Output: 5

Example Input: Sentence 1: Shares of Coke were up 6 cents at $44.42 in afternoon trading Wednesday on the New York Stock Exchange. Sentence 2: Shares of Coke were down 26 cents to close at $44.10 on the New York Stock Exchange.
Example Output:
2