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Operations in its diamond mines include partnerships between state-run Endiama and mining companies such as ALROSA which operate in Angola .
 Endiama, ALROSA, Angola
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Endiama, ALROSA, Angola