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.

Ex Input:
Sentence 1: A large black bird is sitting in the water. Sentence 2: The birds are swimming in the water.

Ex Output:
3


Ex Input:
Sentence 1: A white bus with the word Julia is near water and a big ship. Sentence 2: A white bus with water and a barge in the background.

Ex Output:
4


Ex Input:
Sentence 1: Man standing in front of yellow corvette. Sentence 2: A man is standing next to a yellow sports car.

Ex Output:

3