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: A large black bird is sitting in the water. Sentence 2: The birds are swimming in the water.

Ex Output:
3


Ex Input:
Sentence 1: A woman wearing a pink shirt jumps in the air with her arms and legs spread to her sides. Sentence 2: A man wearing suspenders and sunglasses leaps up in the air with his arms and legs spread out to the side.

Ex Output:
2


Ex Input:
Sentence 1: An airplane moves along a runway. Sentence 2: A plane is landing on a runway.

Ex Output:

3