Task: Story Composition
Input (English): Premise: Chris always thought that he was bad at math. 
 Initial Context: He had to take a remedial course in college. 
 Original Ending: He learned so many concepts that he didn't know about. Now he gets through his upper level courses easily. It turned out that his past teachers were just bad. 
 Counterfactual Context: He did not have to take math for his college major.
Output (English): He learned Science instead. Now he gets through his upper level courses easily. It turned out that his past teachers were just terrific.