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When war erupted and Governor William Dennison called for volunteers to join the army , Tafel enlisted with the Cincinnati " Turnverein " and served as a lieutenant in Company A , 9th Ohio Infantry , a mostly German regiment .
 William Dennison, Tafel, Cincinnati, Turnverein, 9th Ohio Infantry
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 William Dennison, Tafel, Cincinnati, Turnverein, 9th Ohio Infantry