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: Russ Britt is the Los Angeles Bureau Chief for CBS.MarketWatch.com. Sentence 2: Emily Church is London bureau chief of CBS.MarketWatch.com.

Ex Output:
2


Ex Input:
Sentence 1: Two baby pandas are playing. Sentence 2: Two pandas are laying together.

Ex Output:
3


Ex Input:
Sentence 1: Originally Posted by Lone Fox You've said that multiple times now. Sentence 2: Originally Posted by Lone Fox And it's not all Iranian related either.

Ex Output:

2