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: He told the jury Stubbs is a "cold, calculating killer." Sentence 2: District Attorney Dave Lupas reminded jurors that Stubbs is, "a cold, calculating killer".
Example Output: 3

Example Input: Sentence 1: The onus is on the manufacturer of a product to convince consumers it is safe. Sentence 2: The manufacturer has to convince the government it's safe.
Example Output: 3

Example Input: Sentence 1: 2 car bombs kill 8 in southern Iraq Sentence 2: Car bombing kills 14 in northern Iraq
Example Output:
1