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The emperor Marcus Aurelius , rather than wear the " dress to which his rank entitled him " at his own " salutationes " , chose to wear a plain white citizen 's toga instead ; an act of modesty for any patron , unlike Caligula , who wore a triumphal " toga picta " or any other garment he chose , according to whim ; or Nero , who caused considerable offence when he received visiting senators while dressed in a tunic embroidered with flowers , topped off with a muslin neckerchief .
 person: Marcus Aurelius; person: Caligula; person: Nero
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: Marcus Aurelius, Caligula, Nero 
Answer:
 person: Marcus Aurelius; person: Caligula; person: Nero