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Alternately entitled " Africa Sings " , the initial purpose of the film was as a pro- white supremacy short-subject documentary which serves as an advertisement for the birth of apartheid in South Africa but with a conflicting message in the voice-over .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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