Task: Story Composition
Input (English): Premise: It was the first day of winter and it was snowing. 
 Initial Context: Harry wanted to have a snowball fight. 
 Original Ending: He went around the street calling his friends out to play. Eventually, Harry had gathered forty people. They had an extremely fun snowball fight! 
 New ending: He went around the street calling his friends out to play. Eventually, Harry had gathered forty people. They had an extremely fun time building a snowman! 
Output (English): Harry wanted to build a snowman.