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During the late 19th and mid 20th centuries , the river was used to transport timber from logging camps in the upper Sudbury District to Georgian Bay , where they were towed by tugs to sawmills on the Great Lakes .
 location: Sudbury District; location: Georgian Bay; location: Great Lakes
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Sudbury District; location: Georgian Bay; location: Great Lakes