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Joined by his brothers , William , John , and Arthur began by building wooden rowboats in Lake Rosseau , and moved to in Gravenhurst , Ontario in 1890 .
 location: Gravenhurst , Ontario
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: Gravenhurst , Ontario