Task: Story Composition
Input (English): Premise: Ava is nervous about her sweet sixteen tomorrow! 
 Initial Context: Ava never confirmed on all the preparations for the party. 
 Original Ending: Ava mom assures her that her party will be perfect. Ava calls and confirms everything but forgot the cake. The day of the party Ava mom surprises her with the cake she picked. 
 New ending: Ava mom assures her that her party will be perfect. Ava calls and confirms everything but forgot the balloons. The day of the party Ava mom surprises her with the balloons she picked. 
Output (English): She confirmed all the preparations and her party cake was already in the refrigerator.