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: Two brown dogs are biting each other. Sentence 2: Two brown dogs biting each other on sand.

SOLUTION: 4

PROBLEM: Sentence 1: A man is dieing in an operating room. Sentence 2: A man is kissing a woman in stage.

SOLUTION: 0

PROBLEM: Sentence 1: A woman is resting in a floating raft. Sentence 2: A woman relaxes in an inner tube.

SOLUTION:
4