Task: Story Composition
Input (English): Premise: Sam was a race car driver. 
 Initial Context: He was going to the daytona races in a month. 
 Original Ending: He spent hours preparing. It was going to be the best event of his life. But then he crashed and lost. 
 Counterfactual Context: He was so cocky that he would never bother practicing.
Output (English): He spent hours partying. It was going to be the best event of his life. But then he crashed and lost.