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: Two brown dogs running together on sand Sentence 2: Two brown dogs are running on the sand.

Ex Output:
5


Ex Input:
Sentence 1: A lady dressed in a kimono is looking at the camera. Sentence 2: Two girls dressed in black are sitting in a room making suggestive poses at the camera.

Ex Output:
1


Ex Input:
Sentence 1: A dog has it's head inside a red and green gift bag. Sentence 2: A pet playfully investigates the contents of a gift bag.

Ex Output:

4