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.

Example Input: Smoking cigarettes is a nasty Business .
Example Output: Smoking cigarettes is a nasty habit.

Example Input: If you want to switch cash then you should have the underlying change .
Example Output: If you mind to pay cash then you should have the right proof .

Example Input: You would program a computer because you want it to perform a vital task .
Example Output:
You would implement a computer because you want it to perform a special task .