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 bird holding on to a metal gate. Sentence 2: A multi-colored bird clings to a wire fence.

Ex Output:
3


Ex Input:
Sentence 1: Table with blue table cloth in kitchen. Sentence 2: Wooden cabinets in kitchen.

Ex Output:
2


Ex Input:
Sentence 1: a black dog swimming through a river. Sentence 2: a black dog digging through the snow.

Ex Output:

1