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]: A snowball is used to defend oneself against an alert .
[EX A]: A chain is used to store oneself against an attack .

[EX Q]: If you want to serve customers then you should go to a store.
[EX A]: If you want to use customers then you should stop to a store .

[EX Q]: You are grateful to find a horse in a forest .
[EX A]:
You are likely to find a tree in a family .