Task: Story Composition
Input (English): Premise: The girls got ready for the Taylor Swift concert. 
 Initial Context: They were so excited! 
 Original Ending: When the concert started, they sang until they were hoarse. At the end of the night, they went home. They couldn't sleep at all because they were so happy! 
 New ending: When the concert started, they just sat in their seats. At the end of the night, they went home. They couldn't sleep at all because they were so sad! 
Output (English): They were so upset!.