Task: Story Composition
Input (English): Premise: Gary went to the store. 
 Initial Context: He bought a carton of milk. 
 Original Ending: He dropped the milk on his way home. The milk carton cracked at the bottom. Gary drank as much as he could before it spilled. 
 Counterfactual Context: He bought a carton of eggs.
Output (English): He dropped the eggs on his way home. The eggs cracked at the bottom. Gary had to buy new eggs.