Question: The real father of Maggie from "The Simpsons" is revealed in "Starship Poopers". He is also an alien voiced by Harry Shearer. Which planet is he from?
{'answer': 'Rigel VII', 'supporting_facts': [['Treehouse of Horror IX', 0], ['Treehouse of Horror IX', 2], ['Kang and Kodos', 1], ['Kang and Kodos', 2]]}