6543
`` Our essential focus is on domestic policy , '' Mr. Greenspan said , referring to the goals of price stability and a stable economy .
 Greenspan
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