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A Rwandan refugee lobby group called on Saturday for calm in refugee camps in eastern Zaire during a census from Sunday to be conducted by aid workers .
 else: Rwandan; location: Zaire
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, else, organization, person 
Text: {0} 
Answer:
 else: Rwandan; location: Zaire