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.

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

Output: 5


Input: Consider Input: Sentence 1: A man is running on the road. Sentence 2: A panda dog is running on the road.

Output: 2


Input: Consider Input: Sentence 1: Two dogs share a toy in a field of vegetation. Sentence 2: Two snowboarders are in the air over the snow.


Output: 0