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.

Happiness is sometimes thought of as a vein of sunshine .
Temperature is however thought of as a fraction of sunshine .

You can use a Script to follow a case .
You can use a plan to start a war .

Adding butter to food might make it delicious.

Adding butter to peas might make it delicious .