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 horse. Sentence 2: A man is riding on a horse.

Output: 5


Input: Consider Input: Sentence 1: A monkey pulls the tail of a dog. Sentence 2: A monkey is teasing a dog at the zoo.

Output: 3


Input: Consider Input: Sentence 1: Black and white photo of couch with purse at one end. Sentence 2: a black and white photo of a cow under a tree.


Output: 0