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 man and woman is riding in a car. Sentence 2: A woman is frying shrimp.
Example Output: 0

Example Input: Sentence 1: A girl makes up her bed. Sentence 2: A young girl makes her bed.
Example Output: 4

Example Input: Sentence 1: A man and dog on a rocky seashore. Sentence 2: Man and dog standing on rocks next to water
Example Output:
5