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: Someone standing on a snowy mountain, watching a plane. Sentence 2: A man stands on a mountain, watching a plane.

Output: 4


Input: Consider Input: Sentence 1: After protesters rushed the stage and twice cut power to the microphone, Hedges drew the speech to an early close. Sentence 2: After protesters rushed the stage and twice cut power to the microphone, Hedges cut his speech short.

Output: 5


Input: Consider Input: Sentence 1: Two dogs running through tall grass. Sentence 2: Two dogs are running through a grassy area.


Output: 5