Question: Which survivor of the mass shooting that took place on October 16, 1991, at a Luby's restaurant in Killeen, Texas, United States became a leading advocate of an individual's right to carry a concealed weapon?
{'answer': 'Suzanna Gratia Hupp', 'supporting_facts': [['Suzanna Hupp', 0], ['Suzanna Hupp', 1], ["Luby's shooting", 0]]}