Task: Story Composition
Input (English): Premise: Tommy's school announced a prize for whoever read the most books. 
 Initial Context: Tommy loved reading, and he launched into a marathon of books. 
 Original Ending: When the contest ended, Tommy was the clear winner. He got a trophy and put it on his bookshelf. He saw with dismay that he had no books left to read. 
 Counterfactual Context: Tommy hated reading, and he played a marathon of video games instead.
Output (English): When the contest ended, another boy was the clear winner. The boy got a trophy and put it on his bookshelf. He saw with dismay that he had no books left to read.