Task: Story Composition
Input (English): Premise: Roger was hiking in the mountains. 
 Initial Context: He came upon a flock of birds. 
 Original Ending: The flock of birds chased Roger to the edge of the mountain. Luckily, Roger evaded the birds before he had to jump off the cliff. Roger decided to never go back to that mountain. 
 Counterfactual Context: He came upon a few songbirds.
Output (English): The flock of birds were very aggressive and chased Roger to the edge of the mountain. Luckily, Roger evaded the birds before he had to jump off the cliff. Roger decided to never go back to that mountain.