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: And yes, Marilyn Monroe is definitely part of the story, titled "Arthur Miller, Elia Kazan and the Blacklist: None Without Sin." Sentence 2: Note the subheading of this terrible parable in the "American Masters" series, "Arthur Miller, Elia Kazan and the Blacklist: None Without Sin."
Example Output: 3

Example Input: Sentence 1: Clinton lands in India to breathe life into ties Sentence 2: Clinton Warns Against Undermining Grameen Bank
Example Output: 1

Example Input: Sentence 1: Elegant dining room with wood furniture. Sentence 2: An elegant pink dining room with wooden furniture.
Example Output:
4