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: A small white cat standing in a sink. Sentence 2: Grey and white cat sitting in bathroom sink.

Output: 4


Input: Consider Input: Sentence 1: i be having conversations will cornell west My dear brother. Sentence 2: i be having conversations will cornell west What the hell is this?


Output: 3