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 playing a flute. Sentence 2: A man is playing a bamboo flute.

SOLUTION: 4

PROBLEM: Sentence 1: Man riding a bicycle down a narrow path. Sentence 2: A man riding a unicycle down a paved road

SOLUTION: 3

PROBLEM: Sentence 1: A black and white dog swimming in the pool Sentence 2: A black and white dog running with something in his mouth.

SOLUTION:
2