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 three-judge panel of the 11th U.S. Circuit Court of Appeals ruled late Friday that the small size, limited use and secular purpose make the image legitimate. Sentence 2: A three-judge panel of the 8th U.S. Circuit Court of Appeals in St. Louis overturned a ruling issued last year that supported the ordinance.

Ex Output:
3


Ex Input:
Sentence 1: a black and white cow in hay. Sentence 2: A black and white cow in a pen with hay.

Ex Output:
4


Ex Input:
Sentence 1: Zen Report: Ain't easy being high maintenance Sentence 2: Russian meteorite leaves building gaping open

Ex Output:

0