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 Q]: Sentence 1: Plastic toys are floating in water. Sentence 2: The ladies are performing a dance.
[EX A]: 0

[EX Q]: 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 A]: 3

[EX Q]: Sentence 1: Many middle eastern people are sitting in the back of a blue truck. Sentence 2: A group of people are riding in the back of a truck.
[EX A]:
3