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` ` Most of the markets in the Middle East are insignificant in terms of the amount of capital invested in them from the United States , ' ' said Mark Madden , manager of the $ 250 million Pioneer Emerging Markets fund . ' '
 the United States, Mark Madden, manager of the $ 250 million Pioneer Emerging Markets fund, the Middle East
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
Answer:
 the United States, Mark Madden, manager of the $ 250 million Pioneer Emerging Markets fund, the Middle East