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.

All oceans contains salt fish .
All oceans contains salt water.

Friends can check for lunch .
Friends can meet for review .

A red light on a traffic signal means stop.

A broken light on a traffic signal means stop .