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: Parked white double decker bus. Sentence 2: A red and white double decker bus is parked.
[EX A]: 4

[EX Q]: Sentence 1: A toy train is striking a toy car. Sentence 2: A toy train strikes a toy car.
[EX A]: 5

[EX Q]: Sentence 1: A yellow dog is playing in a grassy area near flowers. Sentence 2: A girl is playing on a swing.
[EX A]:
0