Task: Story Composition
Input (English): Premise: Leah was celebrating her 10th birthday. 
 Initial Context: The party was a luau theme and all of her friends were there. 
 Original Ending: Everyone gathered in their hula skirts to sing to Leah. She opened gifts and everyone enjoyed the cake. Everyone swam until the party ended later that afternoon. 
 New ending: Everyone gathered in their Toy Story costumes to sing to Leah. She opened gifts and everyone enjoyed the cake. Everyone played games until the party ended later that afternoon. 
Output (English): The party was a Toy Story theme.