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: David @OmSigDAVID, I think Santorum's more likely than Gingrich. Sentence 2: @sozobe, I think Santorum's more likely than Gingrich.

Output: 5


Input: Consider Input: Sentence 1: A woman wearing a pink shirt jumps in the air with her arms and legs spread to her sides. Sentence 2: A man wearing suspenders and sunglasses leaps up in the air with his arms and legs spread out to the side.

Output: 2


Input: Consider Input: Sentence 1: Narendra Modi pledges tough stand against Pakistan Sentence 2: India’s Modi promises tough stance against Pakistan


Output: 5