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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 .
 location: Thunder Bay District; location: Ontario; location: Canada; location: Nakina; organization: Canadian National Railway
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Thunder Bay District, Ontario, Canada, Nakina, Canadian National Railway 
Answer:
 location: Thunder Bay District; location: Ontario; location: Canada; location: Nakina; organization: Canadian National Railway