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: Strong new quake hits shattered Pak region Sentence 2: Powerful new earthquake hits shattered Pakistan region

Output: 5


Input: Consider Input: Sentence 1: 3 Suspects Taken Into Custody in Boston Bombing Case Sentence 2: Boston police say 3 taken into custody in Marathon bombing

Output: 5


Input: Consider Input: Sentence 1: A little boy is playing a guitar. Sentence 2: A boy is playing guitar.


Output: 5