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: Someone 's aunt Must play the lawyer .

SOLUTION: Someone 's aunt z play the queen .

PROBLEM: If you want to know the bottle then you should have a stone .

SOLUTION: If you rush to hit the bottle then you should have a stone .

PROBLEM: The color of cooked food is important for having a beautiful smile .

SOLUTION:
The color of cooked food is important for having a beautiful feeling .