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Hospital administrators formed an organization called " The Association of Hospital Superintendents of the United States and Canada " , which held its first meeting in 1899 in Cleveland , Ohio , in which city seven of the eight superintendents in attendance were based .
 Hospital, Hospital, Cleveland , Ohio
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Hospital, Hospital, Cleveland , Ohio