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6:33 a.m. , CNN 's Jane Arraf reports from Kirkuk that local authorities and U.S. investigators are still mystified by a graveyard on a military base abandoned by the old Iraqi regime .
 6:33 a.m., CNN, Jane Arraf, Kirkuk, U.S., Iraqi
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:
 6:33 a.m., CNN, Jane Arraf, Kirkuk, U.S., Iraqi