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: The man is riding a bike down a dirt hill. Sentence 2: A trick bicyclist grinds down a handrail.

Output: 2


Input: Consider Input: Sentence 1: I oppose the death penalty. Sentence 2: This is why I support the death penalty.

Output: 1


Input: Consider Input: Sentence 1: Butter is being put into a bowl. Sentence 2: A man cutting butter into a mixing bowl.


Output: 4