Question: What was the establishment date of this ancient kingdom that was annexed during the Southward expansion of the Han Dynasty, and consisted of the commanderies Nanhia, Guilin, and Xiang?
{'answer': '204 BC', 'supporting_facts': [['Southward expansion of the Han dynasty', 0], ['Southward expansion of the Han dynasty', 2], ['Nanyue', 0], ['Nanyue', 1]]}