Task: Story Composition
Input (English): Premise: Tim kept messing up at work. 
 Initial Context: His boss told him it was his last warning. 
 Original Ending: Tim messed up again. The boss felt bad. He gave Tim one last last warning. 
 New ending: Tim messed up again. The boss felt bad. He gave Tim one last warning. 
Output (English): He had not been sleeping and it was effecting his performance.