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: The great thing about living here is there's space. Sentence 2: The bad thing is there's space.
[EX A]: 2

[EX Q]: Sentence 1: The baby is laughing and crawling. Sentence 2: A baby is laughing and crawling on the floor.
[EX A]: 4

[EX Q]: Sentence 1: A steam engine and train moving toward the camera. Sentence 2: A large bird of prey flying towards the camera.
[EX A]:
1