TASK DEFINITION: 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.
PROBLEM: Sentence 1: A man is diving into a swimming pool. Sentence 2: A man is singing into a microphone.

SOLUTION: 1

PROBLEM: Sentence 1: A orange and white cat asleep on a leather chair. Sentence 2: A ginger cat sitting on an office chair.

SOLUTION: 3

PROBLEM: Sentence 1: A dog carries a leash in its mouth. Sentence 2: A fluffy dog carries a black leash in its mouth.

SOLUTION:
4