Task: Story Composition
Input (English): Premise: A little boy named Timmy sure did love his sweets. 
 Initial Context: His mother gave him a lollipop every afternoon. 
 Original Ending: He looked forward to his daily lollipop all morning long. One Saturday, his mother took Timmy to the candy store. Timmy picked out a lollipop that was bigger than his own head! 
 Counterfactual Context: His mother took him to the dentist.
Output (English): He always looked forward to the lollipop his mom promised him after the dentist. One Saturday, his mother took Timmy to the candy store. Timmy picked out a lollipop that was bigger than his own head!