Task: Story Composition
Input (English): Premise: It was raining and the sun was out. 
 Initial Context: Larry knew there was a rainbow somewhere. 
 Original Ending: He looked outside and there it was. The rainbow ended right in front of his house. Sadly there was not a pot of gold. 
 Counterfactual Context: Larry knew the forecast called for a thunderstorm.
Output (English): He looked outside and he was very surprised when he saw a rainbow The rainbow ended right in front of his house. Sadly there was not a pot of gold.