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 boy goes down an inflatable slide. Sentence 2: A boy in red slides down an inflatable ride.
Example Output: 4

Example Input: Sentence 1: The brown and white dog is walking in shallow waters. Sentence 2: A white and brown dog appears to be walking on the water.
Example Output: 5

Example Input: Sentence 1: Tom Kraynak, manager of operations and resources for the Canton, Ohio-based East Central Area Reliability Council, said that scenario is one among many that investigators are considering. Sentence 2: Tom Kraynak, manager of operations and resources for the Canton, Ohio-based East Central Area Reliability Council, said investigators are considering the scenario.
Example Output:
4