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 tying his shoe. Sentence 2: A man ties his shoe.

SOLUTION: 5

PROBLEM: Sentence 1: After protesters rushed the stage and twice cut power to the microphone, Hedges drew the speech to an early close. Sentence 2: After protesters rushed the stage and twice cut power to the microphone, Hedges cut his speech short.

SOLUTION: 5

PROBLEM: Sentence 1: About 22% of twentysomethings are obese, which is roughly 30 pounds over a healthy weight. Sentence 2: About 31 percent of Americans are now obese — roughly 30 or more pounds over a healthy weight.

SOLUTION:
3