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.

[Q]: Sentence 1: An airplane is flying in the air. Sentence 2: A South African Airways plane is flying in a blue sky.
[A]: 3


[Q]: Sentence 1: A black dog running through water. Sentence 2: A black dog is running through some water.
[A]: 5


[Q]: Sentence 1: Regulation get the government into everything. Sentence 2: Get the government into everything?
[A]:
2