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Most in the crowd believed they knew what would follow ; Constantine and Maxentius , the only adult sons of reigning emperors , men who had long been preparing to succeed their fathers , would be granted the title of caesar .
 person: Constantine; person: Maxentius
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Constantine; person: Maxentius