Task: Story Composition
Input (English): Premise: Bonnie and her sister Sue were collecting sea shells. 
 Initial Context: Bonnie only picked up perfect ones. 
 Original Ending: But Sue was looking for shells with holes in them. Bonnie couldn't figure out what her sister was doing. Until that night when she strung her shells into a necklace. 
 Counterfactual Context: Sue only picked up perfect ones.
Output (English): But Bonnie was looking for shells with holes in them. Sue couldn't figure out what her sister was doing. Until that night when she strung her shells into a necklace