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.

Example Input: Sentence 1: 20-member parliamentary, trade team leaves for India Sentence 2: Commerce secretary to take leave of absence
Example Output: 0

Example 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.
Example Output: 2

Example Input: Sentence 1: An older man is standing outside in front of a truck. Sentence 2: A woman dressed in green is roller skating outside at an event.
Example Output:
0