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.

Input: Consider Input: Sentence 1: What isn't how what was sold? Sentence 2: It's not how it was sold, gb.

Output: 2


Input: Consider Input: Sentence 1: A small dog runs through an obstacle course. Sentence 2: A small dog jumping over an obstacle.

Output: 4


Input: Consider Input: Sentence 1: Waksal, in a letter to the court, said: "I tore my family apart. Sentence 2: In seeking leniency, Waksal apologized to the court, his employees and his family.


Output: 2