Which river in the United States is nicknamed Old Man River and is also the chief river of the second largest drainage system on the North American continent?
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The United States of America is part of North America, where the Columbia River is located. The river is different from the other rivers in the country, and is found in the United States.
The United States of America is the location of the river , the Columbia River , which is found in the country of North America . The country is the origin of the rivers , which in turn , are part of the North America region . The river is also known as the North American river .
Which river in the United States is nicknamed Old Man River and is also the chief river of the second largest drainage system on the North American continent?</s>The United States of America is part of North America, where the [unused1]Columbia River                [unused2] is located. The river is different from the other rivers in the country, and is found in the United States.
Which river in the United States is nicknamed Old Man River and is also the chief river of the second largest drainage system on the North American continent?</s>The United States of America is part of North America, where the Columbia River is located. The river is different from the other rivers in the country, and is found in the United States.
Which river in the United States is nicknamed Old Man River and is also the chief river of the second largest drainage system on the North American continent?</s>The United States of America is the location of the river , the [unused1]Columbia River                [unused2] , which is found in the country of North America . The country is the origin of the rivers , which in turn , are part of the North America region . The river is also known as the North American river .
Which river in the United States is nicknamed Old Man River and is also the chief river of the second largest drainage system on the North American continent?</s>The United States of America is the location of the river , the Columbia River , which is found in the country of North America . The country is the origin of the rivers , which in turn , are part of the North America region . The river is also known as the North American river .
Which river in the United States is nicknamed Old Man River and is also the chief river of the second largest drainage system on the North American continent?</s>United States of America,country,United States of America,United States of America,0,river,United States of America,part of,North America,United States of America,0,[unused1]Columbia River[unused2],river,0,United States of America,river,different from,river,river,0,North America,river,0,[unused1]Columbia River[unused2],North America,has part(s),United States of America,North America,0,river,North America,0,North America,North America,0,[unused1]Columbia River[unused2],[unused1]Columbia River[unused2],country,United States of America,[unused1]Columbia River[unused2],instance of,river,[unused1]Columbia River[unused2],continent,North America,[unused1]Columbia River[unused2],0,[unused1]Columbia River[unused2]
Which river in the United States is nicknamed Old Man River and is also the chief river of the second largest drainage system on the North American continent?</s>United States of America,country,United States of America,United States of America,0,river,United States of America,part of,North America,United States of America,0,Columbia River,river,0,United States of America,river,different from,river,river,0,North America,river,0,Columbia River,North America,has part(s),United States of America,North America,0,river,North America,0,North America,North America,0,Columbia River,Columbia River,country,United States of America,Columbia River,instance of,river,Columbia River,continent,North America,Columbia River,0,Columbia River