Question: Anastasia Valeryevna "Nastia" Liukin tied for the third-highest tally of world championship medals with a former gymnast who was the Olympic balance beam champion in what year?
{'answer': '1996', 'supporting_facts': [['Nastia Liukin', 0], ['Nastia Liukin', 3], ['Shannon Miller', 0], ['Shannon Miller', 1]]}