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`` Management does n't want surprises , '' notes Jack Zaves , who , as fuel - services director at American Airlines , buys some 2.4 billion gallons of jet fuel a year .
 Jack Zaves, American Airlines, some 2.4 billion gallons
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:
 Jack Zaves, American Airlines, some 2.4 billion gallons