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Maurice R . " Hank " Greenberg , who turns 80 in May , groomed two sons to be successors , but both have since left AIG . Greenberg Sr . then created an office of the chairman in 2002 , which includes co - COOs Martin J . Sullivan and Donald P . Kanak .
 AIG, Maurice R . " Hank " Greenberg , who turns 80 in May, who, two sons, successors, both, Greenberg Sr, an office of the chairman in 2002 , which includes co - COOs Martin J . Sullivan and Donald P . Kanak, the chairman, which, co - COOs, co - COOs Martin J . Sullivan and Donald P . Kanak
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
Answer:
 AIG, Maurice R . " Hank " Greenberg , who turns 80 in May, who, two sons, successors, both, Greenberg Sr, an office of the chairman in 2002 , which includes co - COOs Martin J . Sullivan and Donald P . Kanak, the chairman, which, co - COOs, co - COOs Martin J . Sullivan and Donald P . Kanak