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: The effect of opening a marketplace is investing money in a business .

SOLUTION: The effect of opening a business is investing money in a business.

PROBLEM: You are likely to find a mouse in a computer store.

SOLUTION: You are likely to find a mouse in a city store .

PROBLEM: If you die to write a program then you should expect code .

SOLUTION:
If you want to write a lib then you should invoke code .