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Summit Lake is a lake in Unorganized Thunder Bay District in Northwestern Ontario , Canada , about northwest of the community of Nakina , and northeast of the Auden and Ombabika stops on the Canadian National Railway transcontinental mainline .
 Thunder Bay District, Ontario, Canada, Nakina, Canadian National Railway
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Thunder Bay District, Ontario, Canada, Nakina, Canadian National Railway