Task: Story Composition
Input (English): Premise: Timmy wanted to play his big brother in tennis. 
 Initial Context: Timmy always lost to him. 
 Original Ending: They played very determined to win. It was a tie game and then Timmy served the ball. The ball hit his brother in the leg to win the game! 
 Counterfactual Context: Timmy always won.
Output (English): They played very determined to win. It was a tie game and then Timmy served the ball. The ball hit his brother in the leg to win the game!