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 phone book will likely have the number and address for a hardware office .

SOLUTION: A phone book will likely have the number and address for a hardware store.

PROBLEM: An x is used for communicating through the postal system .

SOLUTION: An envelope is used for reading through the postal system .

PROBLEM: If you wnet camping you slept in a tent.

SOLUTION:
If you wnet ward you slept in a school .