Question: The third largest inland port in Australia during the great river boat era of the mid-19th century is west and north-west to an area in a county in New South Wales that has what River as it's north-west boundry?
{'answer': 'Darling River', 'supporting_facts': [['Werunda County', 0], ['Werunda County', 1], ['Werunda County', 2], ['Wilcannia', 0], ['Wilcannia', 1]]}