Task: Story Composition
Input (English): Premise: Mario was an inventor. 
 Initial Context: He once created a novel way to make energy. 
 Original Ending: However, his teacher stole the idea and claimed it as his own. Mario was distraught. He left and was never seen again. 
 New ending: However, his teacher himself stole the idea and claimed it as his own. Mario was just like his teacher. He sold the idea. 
Output (English): He once stole his teachers ideas.