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He spent the next few seasons based there managing the fur trading operations but still finding time to expand his surveys of the waterways around Lake Superior .
 location: Lake Superior
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: Lake Superior 
Answer:
 location: Lake Superior