Question: Matthew Pettinger's birth place is on the which river?
Related documents: [0]  [DOC] Matthew Pettinger (born October 22, 1980) is a Canadian professional ice hockey left winger who is currently an unrestricted free agent who last played for the Hamburg Freezers of the Deutsche Eishockey Liga (DEL). He has previously played in the National Hockey League with the Tampa Bay Lightning, Vancouver Canucks and the Washington Capitals. Pettinger was born in Edmonton, Alberta and raised in Victoria, British Columbia. [END] 
[1]  [DOC] Edmonton is the capital city of the Canadian province of Alberta. Edmonton is on the North Saskatchewan River and is the centre of the Edmonton Capital Region, which is surrounded by Alberta's central region. The city anchors the north end of what Statistics Canada defines as the "Calgary–Edmonton Corridor". [END] 
Answer: 
North Saskatchewan River
North Saskatchewan River