Task: Story Composition
Input (English): Premise: Jon loved to spend every summer at the beach with his grandparents. 
 Initial Context: This summer was special in that he was able to take surfing lessons. 
 Original Ending: On his first trip out on the water, his instructor spotted a shark. Quickly, they ran out of the water, but not before the shark attacked. It took a bite out of the surfboard, but noone was hurt. 
 Counterfactual Context: It was a lakehouse.
Output (English): On his first trip out on the water on a raft, they noticed an alligator. Quickly, they ran out of the water, but not before the alligator attacked. It took a bite out of the raft , but no one was hurt.