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Vaalputs is the only South Africa n radioactive waste - disposal facility , called the Vaalputs Radioactive Waste Disposal Facility , operated by NECSA .
 Vaalputs, South Africa, Vaalputs, NECSA
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Vaalputs, South Africa, Vaalputs, NECSA