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: Spain asks for bank rescue Sentence 2: Spaniard on trial for Cuban dissident’s death

Ex Output:
0


Ex Input:
Sentence 1: My niece is married to a black man. Sentence 2: My great niece is half black.

Ex Output:
1


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

Ex Output:

3