Task: Story Composition
Input (English): Premise: The office potluck was on Friday. 
 Initial Context: Heather decided to bring a cheesecake for dessert. 
 Original Ending: She stayed up late on Thursday night to bake the cheesecake. Heather brought the cheesecake to work on Friday morning. Everyone enjoyed eating the dessert Heather had made. 
 New ending: She stopped at the bakery on Thursday night on her way home to buy it. Heather brought the cheesecake to work on Friday morning. Everyone enjoyed eating the dessert Heather had bought. 
Output (English): Heather decided to buy a cheesecake for dessert.