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.

Ex Input:
Sentence 1: View of a living room with a dining room in the background. Sentence 2: A living room with large sofas and a dining table in the background.

Ex Output:
4


Ex Input:
Sentence 1: photo of a television screen showing a movie. Sentence 2: The wall-mounted flat-screen TV is showing a movie.

Ex Output:
3


Ex Input:
Sentence 1: A cat is drinking milk. Sentence 2: A kitten is drinking milk.

Ex Output:

4