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.

[EX Q]: You can use an underground area to protect from sky attack.
[EX A]: You can use an underground area to protect from sky ash .

[EX Q]: agers must feed their pets .
[EX A]: People must feed their youths .

[EX Q]: Cats and toddlers make good pets .
[EX A]:
Cats and dogs make good pets.