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: The man is riding a bike down a dirt hill. Sentence 2: A trick bicyclist grinds down a handrail.

SOLUTION: 2

PROBLEM: Sentence 1: A woman is frying a food. Sentence 2: A woman is deep frying food.

SOLUTION: 4

PROBLEM: Sentence 1: Panda's play on a swing. Sentence 2: A man is playing guitar.

SOLUTION:
1