Task: Story Composition
Input (English): Premise: Boris was taking martial arts classes. 
 Initial Context: He had been training for only a few weeks. 
 Original Ending: He told his instructor that he wanted to learn to use weapons. His instructor shook his head disappointingly. Boris didn't really understand the meaning behind martial arts. 
 Counterfactual Context: He had been training for months.
Output (English): He told his instructor that he wanted to learn some new moves. His instructor nodded his head approvingly. Boris truly understood the meaning behind martial arts.