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Leaders of Uzbekistan ( 1924-1991 ) Uzbek Soviet Socialist Republic ( 1924-1991 ) First secretaries of the Communist Party Presidents of the Republic of Uzbekistan ( 1991-Present ) The first column consecutively numbers the individuals who have served as president , while the second column consecutively numbers the Presidential terms or administrations .
 Uzbekistan, Uzbek Soviet Socialist Republic, Republic of Uzbekistan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Uzbekistan, Uzbek Soviet Socialist Republic, Republic of Uzbekistan