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.
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Question: You can use a roof to provide shelter.

Answer: You can heat a roof to provide concrete .


Question: Happiness is sometimes thought of as a vein of sunshine .

Answer: Temperature is however thought of as a fraction of sunshine .


Question: People can hope for world energy .

Answer:
People can hope for world ending .