Task: Story Composition
Input (English): Premise: A little boy didn't know what to be for Halloween. 
 Initial Context: He found a very scary costume in the costume store. 
 Original Ending: It was a goblin with big green ears. He wore that costume proudly. He won first prize in the costume competition. 
 New ending: He decided to make one himself and made a goblin with big green ears. He wore that costume proudly. He won first prize in the costume competition. 
Output (English): He could not find a costume in the costume store so he left.