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 soccer player is kicking the soccer ball into the goal from a long way down the field. Sentence 2: A soccer player kicks the ball into the goal.
Example Output: 3

Example Input: Sentence 1: Then he is not omnipotent. Sentence 2: Then he is malevolent.
Example Output: 1

Example Input: Sentence 1: Man standing in front of silver train. Sentence 2: Man standing in front of a silver rail car.
Example Output:
4