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 holding a newspaper. Sentence 2: A man rollerblading on a metal bar.

Ex Output:
0


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: How long after the obliteration should the kid return to school? Sentence 2: How long after the obliteration should it no longer bother the kid?

Ex Output:

3