Task: Story Composition
Input (English): Premise: Tom went to see a live music performance. 
 Initial Context: He had one of the best experiences of his life. 
 Original Ending: He decided to learn to play the drums. He took lessons and practiced often. He soon became a drummer in a local band. 
 Counterfactual Context: He had one of the worst experiences of his life.
Output (English): He decided he could play better than them, and learned to play the drums. He took lessons and practiced often. He soon became a drummer in a local band.