56573
Ken Estin and Sam Simon were appointed as showrunners for the third season , and succeeded by David Angell , Peter Casey and David Lee the following year .
 Ken Estin, Sam Simon, David Angell, Peter Casey, David Lee
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Ken Estin, Sam Simon, David Angell, Peter Casey, David Lee