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An agreement was reached during a secret meeting between Khrushchev and Fidel Castro in July 1962 , and construction of a number of missile launch facilities started later that summer .
 Khrushchev, Fidel Castro
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Khrushchev, Fidel Castro