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: paris is the capital of france. Sentence 2: lima is the capital of
Example Output: 1

Example Input: Sentence 1: Scenario A assumes that the CO growth rate accelerates by .%/yr. Sentence 2: It assumes that methane growth rate accelerates by .%/yr.
Example Output: 2

Example Input: Sentence 1: Suicide bomber kills 16 in Afghanistan Sentence 2: Suicide bomber kills 12 in Nigeria church
Example Output:
1