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 man in a blue cap is sitting on a stool under a tree. Sentence 2: A dog standing on a beach with a ball nearby.

Ex Output:
0


Ex Input:
Sentence 1: It's going to happen, said Jim Santangelo, president of the Teamsters Joint Council 42 in El Monte. Sentence 2: That really affects the companies, big time, said Jim Santangelo, president of the Teamsters Joint Council 42 in El Monte.

Ex Output:
2


Ex Input:
Sentence 1: A cat is playing keyboards. Sentence 2: A cat is playing a piano.

Ex Output:

3