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?
Sentence (from "Gainsborough, Lincolnshire"): At one time it served as an important port with trade downstream to Hull, and was the most inland port in England, being more than 55 miles (90 km) from the North Sea.
Relevant evidence: No