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: It 's insightful to look back on your childhood and think of happier endeavors .

SOLUTION: It 's bound to look really on your childhood and think of happier outings .

PROBLEM: A heart is for pumping blood through the chamber .

SOLUTION: A A is for ensuring blood through the water .

PROBLEM: doing your image is for taking control of your life .

SOLUTION:
Learning your image is for taking work of your life .