Question: What is the name of the palace built near the River Arno in Florence, Italy by the son of Buonaccorso Pitti?
{'answer': 'Palazzo Pitti', 'supporting_facts': [['Buonaccorso Pitti', 0], ['Buonaccorso Pitti', 6], ['Palazzo Pitti', 0], ['Palazzo Pitti', 1], ['Palazzo Pitti', 2]]}