Task: Story Composition
Input (English): Premise: Martha really liked animals of all kinds. 
 Initial Context: One day she saw a raccoon sitting on her porch. 
 Original Ending: She gave it a cookie to eat. Soon the raccoon was coming over every day for cookies. Martha was happy to have made a new animal friend. 
 New ending: She gave it a cookie to eat. Soon the porcupine was coming over every day for cookies. Martha was happy to have made a new animal friend. 
Output (English): One day she saw a porcupine sitting on her porch.