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: My niece is married to a black man. Sentence 2: My great niece is half black.

Output: 1


Input: Consider Input: Sentence 1: He gave a surprisingly impassioned speech to the United Steelworkers of America, who announced their endorsement yesterday. Sentence 2: On Tuesday, he picked up the endorsement of the United Steelworkers of America.

Output: 2


Input: Consider Input: Sentence 1: Ernst & Young has denied any wrongdoing and plans to fight the allegations. Sentence 2: Ernst & Young has denied the SEC's claims, and called its recommendations "irresponsible".


Output: 3