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 softball player swinging at a pitch. Sentence 2: A baseball player hitting the ball
Example Output: 3

Example Input: Sentence 1: Ha, ha, ha, ha, ha, ha! Sentence 2: Ah ha, ha, ha, ha, ha!
Example Output: 5

Example Input: Sentence 1: safe bourada was sentenced to 15 years in prison. Sentence 2: djamel badaoui was sentenced to five years.
Example Output:
1