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The players on the Michigan team came from throughout the western states , including Illinois ( Frank Wormwood and team captain and quarterback Walter Horton ) , Iowa ( Richard Dott ) , North Dakota ( the DePuy brothers ) , the Upper Peninsula ( fullback William Olcott ) , and even Florida ( Purl Woodruff ) .
 Michigan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Michigan