Task: Story Composition
Input (English): Premise: It was almost Halloween and they didn't know what they'd be. 
 Initial Context: They went to the store to look at costumes. 
 Original Ending: They looked online to get ideas for couples. They eventually decided on something they thought would work. They decided they would be Mary Poppins and Bert. 
 Counterfactual Context: They went to the store, and bought costumes.
Output (English): They looked online first to get ideas for couples. They eventually decided on something they thought would work. They decided they would be Mary Poppins and Bert.