Given a sentence in Vietnamese, generate a new Vietnamese 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: Thư viện là nơi cất giữ băng.
A: 
Thư viện là một nơi mà cơ sở dữ liệu bị lưu trữ.