Task: Story Composition
Input (English): Premise: Dave was failing in physics. 
 Initial Context: This wasn't good because Dave wanted to be an engineer. 
 Original Ending: Dave got a campus tutor and worked very hard. Dave studied day and night. Dave aced the exam and passed the physics course! 
 Counterfactual Context: He dropped the class and decided to change his major.
Output (English): Dave worked very hard at his new major. Dave studied day and night. Dave aced the exam and passed the literature course!