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 black and brown dog runs through the woods. Sentence 2: A dog running through the woods.

Ex Output:
4


Ex Input:
Sentence 1: NYPD Twitter Outreach Backfires Badly Sentence 2: NYPD's twitter campaign backfires

Ex Output:
5


Ex Input:
Sentence 1: Satan represents indulgence instead of abstinence! Sentence 2: . Satan represents vengeance instead of turning the other cheek!

Ex Output:

2