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In June 1928 , an inter-territorial conference attended by representatives of Kenya , Tanganyika , Uganda , and Zanzibar took place in Mombasa .
 Kenya, Tanganyika, Uganda, Zanzibar, Mombasa
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Kenya, Tanganyika, Uganda, Zanzibar, Mombasa