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 removes a couple of toaster scrambles from a plastic packet. Sentence 2: A man removes food from a bag.

Ex Output:
2


Ex Input:
Sentence 1: A silver bicycle is parked in a living room. Sentence 2: A bicycle in a dining room.

Ex Output:
2


Ex Input:
Sentence 1: At least six dead in US shooting rampage Sentence 2: At least 20 dead in Somalia attacks

Ex Output:

0