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: Black bird sitting on a concrete slab. Sentence 2: Small dog sitting next to white wall.

Output: 1


Input: Consider Input: Sentence 1: Man standing in front of silver train. Sentence 2: Man standing in front of a silver rail car.

Output: 4


Input: Consider Input: Sentence 1: Coupling, an American version of a hit British comedy, will get the valuable Thursday 9:30 p.m. time slot. Sentence 2: Coupling, an American version of a hit British comedy, will couple with Friends on Thursdays.


Output: 3