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: If you want to comfort a seller then you should listen to their problems .

SOLUTION: If you vote to increase a pipeline then you should listen to their problems .

PROBLEM: A coat of happiness does n't make us happier .

SOLUTION: A lot of sleep doesn't make us happier.

PROBLEM: If you want to smoke then you should have hazard insurance .

SOLUTION:
If you wear to smoke then you should have cancer insurance .