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An hour after seeing George W. Bush sworn in , Bill Clinton for the first time in 8 years was no longer introduced as the President of the United States .
 An hour, George W. Bush, Bill Clinton, first, 8 years, the United States
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:
 An hour, George W. Bush, Bill Clinton, first, 8 years, the United States