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.

Input: Consider Input: Sentence 1: Several shots rang out in the darkness, but only one gator had been killed by 11 p.m. Sentence 2: Several shots rang out Wednesday night, but no gators were killed then.

Output: 2


Input: Consider Input: Sentence 1: Feds move to require car-to-car safety communication Sentence 2: Guatemala overturns former dictator's genocide conviction

Output: 0


Input: Consider Input: 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.


Output: 5