Question: What is the river where Long Spruce Generating Station is located a tributary of?

Knowledge 1: Long Spruce Generating Station
It was Manitoba Hydro's fourth generating station to be built on the Nelson River, which flows from Lake Winnipeg to Hudson Bay. The station was built on Long Spruce Rapids. The site is approximately east of Gillam, Manitoba and is downstream of Manitoba Hydro's Kettle Generating Station. [SEP] Knowledge 2: Nelson River
Fort Nelson, a historic Hudson's Bay Company trading post, was at the mouth of the Nelson River at Hudson Bay and was a key trading post in the early 18th century. After his pivotal role in establishing the Hudson's Bay Company, Pierre Esprit Radisson, noted French explorer, was chief director of trade at Fort Nelson during one of his sustained periods of service to England. Today, Fort Nelson no longer exists. Port Nelson, the abandoned shipping port, remains on the opposite side of the river mouth on Hudson Bay.
Knowledge 1: Nelson River
Fort Nelson, a historic Hudson's Bay Company trading post, was at the mouth of the Nelson River at Hudson Bay and was a key trading post in the early 18th century. After his pivotal role in establishing the Hudson's Bay Company, Pierre Esprit Radisson, noted French explorer, was chief director of trade at Fort Nelson during one of his sustained periods of service to England. Today, Fort Nelson no longer exists. Port Nelson, the abandoned shipping port, remains on the opposite side of the river mouth on Hudson Bay. [SEP] Knowledge 2: Rockefeller Center Christmas Tree
Year Original location Tree type Height Lighting 2017 State College, PA Norway spruce 75 ft November 29, 2017 2016 Oneonta, NY Norway spruce 94 ft November 30, 2016 2015 Gardiner, NY Norway spruce 78 ft December 2, 2015 2014 Danville, PA Norway spruce 85 ft December 3, 2014 2013 Shelton, CT Norway spruce 76 ft December 4, 2013 2012 Flanders, NJ Norway spruce 80 ft November 28, 2012 2011 Mifflinville, PA Norway spruce 74 ft November 30, 2011 Mahopac, NY Norway spruce 74 ft November 30, 2010 2009 Easton, CT Norway spruce 76 ft December 2, 2009 2008 Hamilton, NJ Norway spruce 72 ft December 3, 2008 2007 Shelton, CT Norway spruce 84 ft November 28, 2007 2006 Ridgefield, CT Norway spruce 88 ft November 29, 2006 2005 Wayne, NJ Norway spruce 74 ft November 30, 2005 Suffern, NY Norway spruce 71 ft November 30, 2004 2003 Manchester, CT Norway spruce 79 ft December 3, 2003 2002 Bloomsbury, NJ Norway spruce 76 ft December 4, 2002 Wayne, NJ Norway spruce 81 ft November 28, 2001 2000 Buchanan, NY Norway spruce 80 ft November 29, 2000 1999 Killingworth, CT Norway spruce 100 ft * December 1, 1999 1998 Richfield, OH Norway spruce 75 ft December 2, 1998 Stony Point, NY Norway spruce 70 ft December 2, 1997 Armonk, NY Norway spruce 90 ft December 3, 1996 1995 Mendham, NJ Norway spruce 75 ft December 5, 1995 Ridgefield, CT Norway spruce 85 ft December 2, 1994 Montebello, NY Norway spruce 70 ft 1986 Nanuet, NY Norway spruce 68 ft 1980 Mahwah, NJ Norway spruce 70 ft 1978 Mahwah, NJ Norway spruce 75 ft 1963 Rockaway, NJ Bruce Fir, Veit 84 ft 1957 Brighton, VT White spruce 67 ft
Knowledge 1: Long Spruce Generating Station
It was Manitoba Hydro's fourth generating station to be built on the Nelson River, which flows from Lake Winnipeg to Hudson Bay. The station was built on Long Spruce Rapids. The site is approximately east of Gillam, Manitoba and is downstream of Manitoba Hydro's Kettle Generating Station. [SEP] Knowledge 2: Stazione FS (Brescia Metro)
Stazione FS is a station of the Brescia Metro, in the city of Brescia in northern Italy. It is located beside the Brescia railway station near the city centre and close to long distance and local bus stations.

Answer: Hudson's Bay