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 a cat in an early lady 's house .

SOLUTION: You are likely to find a dog in an old doll 's bone .

PROBLEM: Smoking is usually only allowed in certain places at work.

SOLUTION: Smoking is usually only met in certain institutions at work .

PROBLEM: You need to release a mirror to get into a pond .

SOLUTION:
You need to drill a hole to get into a box.