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Andrew Gronholdt of the Shumagin Islands has played a vital role in reviving the ancient art of building the " chagudax " or bentwood hunting visors .
 Andrew Gronholdt, Shumagin Islands
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Andrew Gronholdt, Shumagin Islands