Task: Story Composition
Input (English): Premise: The concrete workers had been working all day. 
 Initial Context: They redid the sidewalk in front of Ava's house. 
 Original Ending: The smoothed it out perfectly. Then, a little girl came running by. She left a footprint in the perfectly smooth sidewalk. 
 Counterfactual Context: They redid the sidewalk in front of Ava's house and there will never be a footprint on the sidewalk.
Output (English): They smoothed it out perfectly. Then, a little girl came running by. She tried to leave a footprint in the perfectly smooth sidewalk but there were barriers.