Where does the seine river start and end?
No context provided
Where does the seine river start?
Lac des Mille Lacs
No context provided
Where does the seine river end?
Rainy Lake
Seine River (Manitoba)
https://en.wikipedia.org/wiki/Seine%20River%20%28Manitoba%29
Seine River (Ontario)
https://en.wikipedia.org/wiki/Seine%20River%20%28Ontario%29
Lac des Mille Lacs is a lake in the western part of Thunder Bay District in northwestern Ontario, Canada. It is in the Nelson River drainage basin and is the source of the Seine River. The lake lies between Ontario Highway 17 on the north and Ontario Highway 11 on the south
Lac des Mille Lacs
Rainy Lake (French: lac à la Pluie; Ojibwe: gojiji-zaaga'igan) is a freshwater lake with a surface area of 360 square miles (932 km2) that straddles the border between the United States and Canada. 
Rainy Lake
 Rainy Lake and Rainy River establish part of the boundary between the US state of Minnesota and the Canadian province of Ontario.
Rainy Lake
The Seine River starts at Lac des Mille Lacs and ends at Rainy Lake. The source of the Seine River, Lac des Mille Lacs is a lake in the western part of  the Thunder Bay District in northwestern Ontario, Canada. This lake lies between Ontario Highway 17 on the north and Ontario Highway 11 on the south. Rainy Lake, at the end of the Seine River, is a freshwater lake with a surface area of 360 square miles. This lake straddles the border between the United States and Canada. Rainy Lake and Rainy River establish part of the boundary between the US state of Minnesota and the Canadian province of Ontario.