Task: Story Composition
Input (English): Premise: Dave went to the beach with buckets. 
 Initial Context: He began to take sand from the beach and put it into buckets. 
 Original Ending: He took the buckets home. In Dave's backyard was a square wooden box in which he dumped sand. Now Dave had a proper sandbox with real beach sand. 
 Counterfactual Context: He filled the buckets with water.
Output (English): He dumped out the water and filled them with sand instead, then took the buckets home. In Dave's backyard was a square wooden box in which he dumped sand. Now Dave had a proper sandbox with real beach sand.