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: Spain asks for bank rescue Sentence 2: Spaniard on trial for Cuban dissident’s death

Ex Output:
0


Ex Input:
Sentence 1: A man is playing a flute. Sentence 2: A man is playing a bamboo flute.

Ex Output:
4


Ex Input:
Sentence 1: Terri Schiavo, 39, is expected to die sometime in the next two weeks in the Tampa-area hospice where she has spent the past several years. Sentence 2: Terri Schiavo, 39, underwent the procedure at the Tampa Bay area hospice where she has been living for several years, said her father, Bob Schindler.

Ex Output:

2