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.

You would clean your room because the mess was depressing.
You would starve your flesh because the cost was depressing .

If you dislike to go to a play then you should buy tickets .
If you want to go to a play then you should buy tickets.

Post offices are used to import mail to other places .

Post offices are used to send mail to other places.