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: A brown dog is splashing water everywhere by shaking the water off of itself. Sentence 2: A white dog is standing by a river shaking himself dry.
Example Output: 2

Example Input: Sentence 1: If you asked , conservatives, the numbers will be skewed to the right. Sentence 2: If you asked , progressives, the numbers would be skewed to the left.
Example Output: 3

Example Input: Sentence 1: Britz earned $3.77 million in salary, bonus and other compensation, and Kinney earned $3.76 million. Sentence 2: Johnston made $5.8 million in salary and bonus in 2001 as president, and as a part-time adviser earned $1 million in 2002.
Example Output:
1