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: Glover spoke at a news conference that included about 20 relatives of the victims. Sentence 2: About 20 family members of the victims were invited to the news conference.
Example Output: 3

Example Input: Sentence 1: Rangers voted into Division Three Sentence 2: Rangers voted into third division
Example Output: 5

Example Input: Sentence 1: A white and black dog is jumping into a pool. Sentence 2: A woman in a black apron is standing in front of a mirror.
Example Output:
0