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: 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: Under NASD regulations, Mr. Young can file a response and request a hearing before an NASD panel. Sentence 2: The analyst, already let go by Merrill, can request a hearing before a NASD panel.
Example Output: 3

Example Input: Sentence 1: Someone is seasoning eggs. Sentence 2: Someone is seasoning two raw eggs in a bowl.
Example Output:
4