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.

Sentence 1: A black and white dog looking at the camera. Sentence 2: A small black and white goat in a pen looking up at the camera.
1

Sentence 1: Mom busted in and said, "What's that noise?" Sentence 2: My kids busted in and said 'whats that Dad?'
2

Sentence 1: A brown dog is resting its paws on a laptop keyboard. Sentence 2: A dog sits with its paws on a laptop computer.

4