Q:Information: - Bass Strait is a sea strait separating Tasmania from the Australian mainland, specifically the state of Victoria. - Tasmania (abbreviated as Tas and known colloquially as "Tassie") is an island state of the Commonwealth of Australia. It is located to the south of the Australian mainland, separated by Bass Strait. The state encompasses the main island of Tasmania, the 26th-largest island in the world, and the surrounding 334 islands. The state has a population of around 518,500, just over forty percent of which resides in the Greater Hobart precinct, which forms the metropolitan area of the state capital and largest city, Hobart. - The Gordon River is a major perennial river located in the central highlands, south-west, and western regions of Tasmania, Australia. - Franklin-Gordon Wild Rivers is a national park in Tasmania, 117km west of Hobart. It is named after the two main river systems lying within the bounds of the park - the Franklin River and the Gordon River. - The Franklin River lies in the Franklin - Gordon Wild Rivers National Park at the mid northern area of the Tasmanian Wilderness World Heritage Area . Its source is situated at the western edge of the Central Highlands and it continues west towards the West Coast of Tasmania . It was named after an earlier Governor of that state , Sir John Franklin , who later died searching for the Northwest Passage . Although the Lyell Highway passes through it , the catchment area of the river has never had any significant European settlement . There are some archaeological sites that have identified pre-European activity . What is the relationship between 'franklin river' and 'gordon river'?
A:
mouth of the watercourse