Task: Story Composition
Input (English): Premise: Ben decided to visit the pet store. 
 Initial Context: He spent most of his time searching for a pair of goldfish. 
 Original Ending: The cashier caught his attention and showed him around the store. He even persuaded Ben to purchase a hamster. At the end of the day, Ben took home the hamster and a few supplies. 
 New ending: The cashier caught his attention and showed him around the store. He even persuaded Ben to purchase a white rat. At the end of the day, Ben took home the white rat and a few supplies. 
Output (English): He was interested in any pet besides a hamster.