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Robertson 's African Development Company used the cover of Robertson 's tax - exempt `` Operation Blessing '' to ferry conflict diamonds out of civil war - ravaged Zaire ( now Congo ) .
 person: Robertson; organization: African Development Company; person: Robertson; geographical social political: Zaire; geographical social political: Congo
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: date, organization, person, geographical social political, national religious political, facility, cardinal, location, work of art, law, event, product, ordinal, percent, time, quantity, money, language 
Text: {0} 
Answer:
 person: Robertson; organization: African Development Company; person: Robertson; geographical social political: Zaire; geographical social political: Congo