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]: If you want to have a party then you should buy snacks and drinks.
[EX A]: If you want to have a party then you should buy fish and drinks .

[EX Q]: You would make a phone call because you want to send to someone .
[EX A]:
You would make a phone call because you want to tie to someone .