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: Egypt's opposition criticizes president's speech Sentence 2: Pakistan's opposition party boycotts presidential elections

Ex Output:
0


Ex Input:
Sentence 1: Mann's work was all about math. Sentence 2: Mann's work and the HS was all about Tree rings.

Ex Output:
2


Ex Input:
Sentence 1: Black cow walking under trees in pasture. Sentence 2: Cow walking under the tree in a pasture.

Ex Output:

4