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: An artist can craft art .

SOLUTION: An ach can abal art .

PROBLEM: You may share a screen file bill .

SOLUTION: You may get a credit card bill.

PROBLEM: An E works for a company .

SOLUTION:
An employee works for a company.