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: Man arrested over double murder Sentence 2: WA man arrested in police drug raid

Output: 1


Input: Consider Input: Sentence 1: Someone is playing piano. Sentence 2: A person is playing a keyboard piano.

Output: 4


Input: Consider Input: Sentence 1: It's definitely NOT what it used to be. Sentence 2: voted Voted It's definitely NOT what it used to be.


Output: 4