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.

[Q]: Com You make sound .
[A]: Com ears make sound .


[Q]: A mill is a bit or mechanism that employs grain .
[A]: A powder is a device or filter that loses grain .


[Q]: A launching platform is served for cooling up rockets .
[A]:
A launching platform is used for sending up rockets.