Task: Story Composition
Input (English): Premise: Wendy was happy to hear of the annual turtle race at her summer camp. 
 Initial Context: She was lucky to find a turtle on a rock near the lake. 
 Original Ending: She marked him with chalk and named him Elmer. Elmer won his race! Wendy was so excited to write of his victory to her mother and father. 
 Counterfactual Context: She was disappointed not to find a turtle.
Output (English): She went to her friend's turtle, Elmer, and marked him with chalk. Elmer won his race! Wendy was so excited to write of his victory to her mother and father.