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 are likely to find an altar in a church.

SOLUTION: You are close to find an altar in a mirror .

PROBLEM: Hearing the technology requires hidden ears or hearing aids .

SOLUTION: Hearing the news requires good ears or hearing aids.

PROBLEM: The government will kill you if it faces you as a threat .

SOLUTION:
The government will kill you if it confronts you as a threat .