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: Cleveland Kidnapper Ariel Castro Found Hanged in Prison Cell Sentence 2: Cleveland kidnapper Ariel Castro found hanging in his cell

Ex Output:
5


Ex Input:
Sentence 1: Two foxes are eating from a plate on a brick patio. Sentence 2: Foxes are eating from a plate.

Ex Output:
3


Ex Input:
Sentence 1: A man and a woman are riding on their bicycles. Sentence 2: A man and woman are riding a motorcycle.

Ex Output:

2