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.

Ex Input:
Sentence 1: A climber is standing on the rock face next to the pink rope. Sentence 2: The children are running in the snow with fences in the background.

Ex Output:
0


Ex Input:
Sentence 1: He told the jury Stubbs is a "cold, calculating killer." Sentence 2: District Attorney Dave Lupas reminded jurors that Stubbs is, "a cold, calculating killer".

Ex Output:
3


Ex Input:
Sentence 1: Two zebras are playing. Sentence 2: Zebras are socializing.

Ex Output:

4