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 drive your car then you should respect your keys .

SOLUTION: If you want to drive your car then you should reload your keys .

PROBLEM: The effect of buying planes is you have to spend money .

SOLUTION: The effect of buying assets is you have to develop money .

PROBLEM: You are likely to find a dental chair in a teenager 's office .

SOLUTION:
You are helpless to find a dental program in a director 's office .