TASK DEFINITION: Given a sentence, generate a new sentence by performing small changes on the sentence. Here, make sure that the changes are semantically related and syntactically similar to the input. And the generated sentence should have high commonsense plausibility, that is to have reasonable probability of it being true.
PROBLEM: You would play basketball because you want to take advantage of your horn .

SOLUTION: You would emphasize basketball because you want to take advantage of your future .

PROBLEM: Happiness is sometimes thought of as a vein of sunshine .

SOLUTION: Temperature is however thought of as a fraction of sunshine .

PROBLEM: A director can quit a film .

SOLUTION:
A director can complete a photo .