Task: Story Composition
Input (English): Premise: A boy and a girl were looking for trees to climb at the park. 
 Initial Context: They both wanted a challenge, and they soon found the best tree. 
 Original Ending: It was the biggest tree in the park, and the kids scrambled up it. When they got to the top, they realized they'd have go down. The fire department had to be called to get them out of the tree! 
 Counterfactual Context: They both wanted a challenge, but the trees are too small.
Output (English): They found the biggest tree in the park, and the kids scrambled up it. When they got to the top, they realized they'd didn't want to leave. Their mother had to be called to get them out of the tree!