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: A dog is running through a backyard full of leaves. Sentence 2: Three dogs run through a field.

Output: 3


Input: Consider Input: Sentence 1: A man is playing a flute. Sentence 2: A man is playing a bamboo flute.

Output: 4


Input: Consider Input: Sentence 1: A dog biting on a can. Sentence 2: A dog opens a can of food.


Output: 2