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 cat is playing the piano. Sentence 2: A cat is licking its paw.

SOLUTION: 0

PROBLEM: Sentence 1: A bird holding on to a metal gate. Sentence 2: A multi-colored bird clings to a wire fence.

SOLUTION: 3

PROBLEM: Sentence 1: Two dogs are running through a grassy area. Sentence 2: Two dogs running through a grassy field.

SOLUTION:
5