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 man is tying his shoe. Sentence 2: A man ties his shoe.
Example Output: 5

Example Input: Sentence 1: elbaradei is the international atomic energy agency chief. Sentence 2: mohammed elbarade is the international atomic energy agency's director general.
Example Output: 5

Example Input: Sentence 1: Chera Larkins, 32, of Manhattan, charged with three sham marriages, is also charged with perjury and filing a false instrument. Sentence 2: Chera Larkins, 32, of Manhattan, charged with perjury and filing a false instrument in three marriage applications.
Example Output:
5