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The son of Piet Nel and Kitty Maritz , he was educated at Maritzburg College , matriculating as Head Prefect and captain of the rugby First XV in 1921 .
 Nel, Maritzburg College
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Nel, Maritzburg College