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The dollar climbed immediately higher on news of Mr. Greenspan 's testimony , settling lower in later trade as dealers squared positions ahead of today 's preliminary report on third - quarter U.S. gross national product .
 Greenspan, today, third - quarter, U.S.
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:
 Greenspan, today, third - quarter, U.S.