Task: Story Composition
Input (English): Premise: I discovered banh mi in 2005. 
 Initial Context: They are cheap and tasty Vietnamese sub sandwiches. 
 Original Ending: I convinced my workers to try them out. One worker loved them, but another almost threw up. I stopped buying them after gaining weight. 
 Counterfactual Context: They are so delicious.
Output (English): I convinced my workers to try them out. One worker loved them, but another almost threw up. I stopped buying them after seeing him get sick.