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.

You are likely to find a cigarette in a cigarette pack.
You are likely to find a stub in a cigarette pack .

Cash can be used to make purchases at most books .
Cash can be used to make purchases at most warehouses .

A full moon can light the situation .

A full moon can light the sky.