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: 3 dead, 27 injured in SW China accident Sentence 2: 35 dead and 165 missing in India boat accident

Ex Output:
0


Ex Input:
Sentence 1: Red panda‚Äôs short-lived zoo escape Sentence 2: India‚Äôs march to Mars

Ex Output:
0


Ex Input:
Sentence 1: Egypt's Mubarak critical Sentence 2: Egypt's Mubarak in critical condition

Ex Output:

5