Instructions: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Input: The Treaty of Fort Stanwix involved acquisition of land south of this river. In the late 1700's, this river was the southern boundary of the Northwest Territory. The mouth of this river is located in Cairo, Illinois and this river flows through such cities as Wheeling and Evansville. The Wabash is one of the largest tributaries of this river. In the heart of Pittsburgh, this river is formed by the joining of the Monongahela and Allegheny rivers. For 10 points, name this river which as its name suggests forms the southern border of a state with capital at Columbus.
Output:
Social Science