TASK DEFINITION: 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.
PROBLEM: A birthday cake definitely has lit candles on it .

SOLUTION: A carriage bench usually has lit candles on it .

PROBLEM: Red and yellow can be charred to make orange .

SOLUTION: Red and yellow can be enhanced to make orange .

PROBLEM: If you lose clarity of belief , you may hurt very tired .

SOLUTION:
If you prevent track of time , you may fail very tired .