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: Two constructions workers sit on a beam taking a break. Sentence 2: The man is putting on his shirt near an elevator.

Ex Output:
0


Ex Input:
Sentence 1: Among three major candidates, Schwarzenegger is wining the battle for independents and crossover voters. Sentence 2: Schwarzenegger picks up more independents and crossover voters than Bustamante.

Ex Output:
3


Ex Input:
Sentence 1: A man sharpens a pencil using a knife. Sentence 2: A woman is dancing in the rain.

Ex Output:

0