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: Two baby pandas are playing. Sentence 2: Two pandas are laying together.
Example Output: 3

Example Input: Sentence 1: Red panda‚Äôs short-lived zoo escape Sentence 2: India‚Äôs march to Mars
Example Output: 0

Example Input: Sentence 1: A man is dieing in an operating room. Sentence 2: A man is kissing a woman in stage.
Example Output:
0