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.

Sentence 1: A red double decker bus on a crowded street. Sentence 2: A white bus partially in the snow on a public street.
2

Sentence 1: A man and woman is riding in a car. Sentence 2: A woman is frying shrimp.
0

Sentence 1: I wood have asked her if she is up for a treesome. Sentence 2: I wood have at least asked if a threesome was out of the question.

5