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: wen states that the main purpose of the germany visit is to advance trade, economic and technological exchanges. Sentence 2: wen stated that the purpose of his visit to germany is to advance trade, economic and technological exchanges.
[EX A]: 5

[EX Q]: Sentence 1: Two dogs run side-by-side on the grass. Sentence 2: Two dogs running on grass.
[EX A]: 4

[EX Q]: Sentence 1: The point you quote should say "I never said rehabilitation could never work." Sentence 2: For the trillionth time, I've never said rehabilitation doesn't work.
[EX A]:
3