Question: Martha Argerich invited which 12 year old French pianist to perform at the Pacific Music Festival in Japan marking the beginning of his career?
{'answer': 'François-Xavier Poizat', 'supporting_facts': [['François-Xavier Poizat', 0], ['François-Xavier Poizat', 2], ['François-Xavier Poizat', 3], ['Martha Argerich', 0]]}