Task: Story Composition
Input (English): Premise: I met a guy at work today. 
 Initial Context: He told me his name was Jeffrey. 
 Original Ending: Jeffrey asked for my number. When I got home from work we talked all night. Jeffrey has become one of my best friends! 
 Counterfactual Context: He told me his name was Warren.
Output (English): Warren asked for my number. When I got home from work we talked all night. Warren has become one of my best friends!