Task: Story Composition
Input (English): Premise: Roger invited his brother to play a game of chess. 
 Initial Context: His brother was reluctant, but eventually accepted. 
 Original Ending: They set up the board between them. Roger easily defeated his brother in the game. He then realized why his brother had been so reluctant before. 
 Counterfactual Context: His brother declined his invitation.
Output (English): He set up the board anyway. Roger would have easily defeated his brother in the game. He then realized why his brother had refused to play.