Task: Story Composition
Input (English): Premise: Bo wanted to add bulk to his slight frame. 
 Initial Context: He went to the gym every day to lift weights. 
 Original Ending: But still his legs were thin and weak! Bo decided to dedicate one weekday JUST for leg exercises. In a few months his 'leg day' had made his legs muscular and strong! 
 New ending: But still his arms were thin and weak! Bo decided to dedicate one weekday JUST for arm exercises. In a few months his 'arm day' had made his arms muscular and strong! 
Output (English): He went to the gym every day to lift weights and now has huge legs!.