Task: Story Composition
Input (English): Premise: On the last trip to the zoo, I took my 11 year old son. 
 Initial Context: His favorite part was the chinese pandas. 
 Original Ending: He had never seen them before, as they are rare in the United States. There were 2 of them, lying around on top of rocks behind glass. They didn't even look up at us the entire time we were there. 
 Counterfactual Context: His favorite part of the zoo was the ice cream stand.
Output (English): He had never seen them before, as they are rare in the Arctic. There were 2 of them, sitting near the rocks behind the glass. The other customers didn't even look up at us the entire time we were there.