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 train rides on his tracks. Sentence 2: The train comes down the track, between two rows of trees.

Output: 3


Input: Consider Input: Sentence 1: A softball player swinging at a pitch. Sentence 2: A baseball player hitting the ball

Output: 3


Input: Consider Input: Sentence 1: A black and white cow in a pen with hay. Sentence 2: A black and white cat lies in the dirt.


Output: 0