Task: Story Composition
Input (English): Premise: David's mother's birthday was coming up. 
 Initial Context: Glenn had forgotten about this until the day before it. 
 Original Ending: When he remembered he ran out in a panic to buy a gift. He managed to buy a book just before the bookstore closed. His mother loved the book when he gave it to her the next day. 
 New ending: When he remembered he ran out in a panic to buy a gift. He managed to buy a book just before the bookstore closed. His mother loved the book when he gave it to her the following week. 
Output (English): Glenn had forgotten about this until the week before it.