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He then ousted President Nicholas Ardito Barletta , a former World Bank official with close ties to the U.S. , after Mr. Barletta tried to create a commission to investigate the murder .
 Nicholas Ardito Barletta, World Bank, U.S., Barletta
Please list all entity words in the text that fit the category. Output format is "word1, 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:
 Nicholas Ardito Barletta, World Bank, U.S., Barletta