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His childhood reading included Foundation 's " Pretoria Boys High School " series , from which he drew the lesson that " you should try to take the set of actions that are likely to prolong civilization , minimize the probability of a dark age and reduce the length of a dark age if there is one " .
 organization: Foundation; organization: Pretoria Boys High School
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 organization: Foundation; organization: Pretoria Boys High School