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 is speaking in sign language. Sentence 2: A woman spices some seafood.

Ex Output:
1


Ex Input:
Sentence 1: Iraq Backs Egypt Crackdown on Morsi Supporters Sentence 2: Iraq backs Egypt crackdown on Mohamed Morsi supporters

Ex Output:
5


Ex Input:
Sentence 1: Sendmail said the system can even be set up to permit business-only usage. Sentence 2: The product can be instructed to permit business-only use, according to Sendmail.

Ex Output:

5