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: Tokyo to host 2020 Olympic Games Sentence 2: Wrestling to feature in 2020 Tokyo Olympics

SOLUTION: 1

PROBLEM: Sentence 1: A man is taking some math classes. Sentence 2: A man is rinsing a steak.

SOLUTION: 0

PROBLEM: Sentence 1: The black dog is walking through the tall grass. Sentence 2: The black dog is running through the grass.

SOLUTION:
4