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The Mwela Rock Paintings are a national monument of Zambia , about east of Kasama This site was re-added to the UNESCO World Heritage Tentative List on March 10th , 2009 , in the Mixed category .
 Zambia, UNESCO
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Zambia, UNESCO