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 can equip a backdoor to stay on a door .

SOLUTION: You can use a shotgun to knock on a shop .

PROBLEM: You can use the sky to test an airplane opposite the eye .

SOLUTION: You can use the service to berth an airplane across the platform .

PROBLEM: If you want to erase a poem then you should train a pen .

SOLUTION:
If you fancy to think a poem then you should get a jacket .