Task: Story Composition
Input (English): Premise: The man grabbed the woman's purse. 
 Initial Context: He ran away from her. 
 Original Ending: She yelled out for help. Somebody chased the thief. The thief got tackled in the street. 
 Counterfactual Context: Fortunately he only made it a few feet before he tripped on a crack in the sidewalk.
Output (English): She yelled for help before we could get away. Someone came over and help hold him down. He was contained and she got her purse.