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As far as content is concerned , comedians such as Tommy Tiernan , Des Bishop , Kevin Hart and Joan Rivers draw on their background to poke fun at themselves , while others such as Jon Stewart , and Ben Elton have very strong political and cultural undertones .
 person: Tommy Tiernan; person: Des Bishop; person: Kevin Hart; person: Joan Rivers; person: Jon Stewart; person: Ben Elton
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: Tommy Tiernan, Des Bishop, Kevin Hart, Joan Rivers, Jon Stewart, Ben Elton 
Answer:
 person: Tommy Tiernan; person: Des Bishop; person: Kevin Hart; person: Joan Rivers; person: Jon Stewart; person: Ben Elton