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 woman is eating something. Sentence 2: A woman is eating meat.

Ex Output:
3


Ex Input:
Sentence 1: A little boy clowns with a colander on his head. Sentence 2: A boy with a metal colander on his head.

Ex Output:
4


Ex Input:
Sentence 1: A black and white dog is swimming in a large green lake. Sentence 2: A black dog runs fast into shallow water.

Ex Output:

2


