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President Clinton leaves for East Asia today to attend the annual Asia Pacific Economic Co-operation Summit , held this year in Brunei .
 Clinton, East Asia, annual, Asia Pacific Economic Co-operation Summit, Brunei
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:
 Clinton, East Asia, annual, Asia Pacific Economic Co-operation Summit, Brunei