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: If you want to read a typo , go to a bookstore .

SOLUTION: If you want to read a book, go to a bookstore.

PROBLEM: The church ceremony starts with a formal procession.

SOLUTION: The church house starts with a formal morning .

PROBLEM: Water can be created by combining oxygen, hydrogen and electricity.

SOLUTION:
Water can be retrieved by combining oxygen , hydrogen and electricity .