Task: Story Composition
Input (English): Premise: Emily called the museum because her dog found dinosaur bones. 
 Initial Context: The museum sent an archaeologist to look at the bone. 
 Original Ending: The archaeologist said it was a pterodactyl bone. Emily was very excited to hear about the pterodactyl. The archaeologist called the museum to tell them what he found. 
 Counterfactual Context: The museum sent a scientist to look at the bone.
Output (English): The scientist said it was a pterodactyl bone. Emily was very excited to hear about the pterodactyl. The scientist called the museum to tell them what he found.