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Secretary of Defense Robert Gates asked for and received his resignation ( and that of Chief of Staff T. Michael Moseley ) on June 5 , 2008 , in the wake of the 2007 United States Air Force nuclear weapons incident and the mistaken shipment of Minuteman III parts to Taiwan in 2006 , followed by an investigation by and a critical report from Admiral Kirkland H. Donald regarding the Minuteman incident .
 Robert Gates, T. Michael Moseley, Taiwan, Kirkland H. Donald
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Robert Gates, T. Michael Moseley, Taiwan, Kirkland H. Donald