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 along the grass. Sentence 2: A brown dog is running in the grass.

Output: 4


Input: Consider Input: Sentence 1: 7 dead in Christian school shooting Sentence 2: 5 wounded in Ohio school shooting

Output: 1


Input: Consider Input: Sentence 1: A person folds a tortilla. Sentence 2: A man folds a tortilla.


Output: 4