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Under the governance of the jurists Gregorius , Aurelius Arcadius Charisius , and Hermogenianus , the imperial government began issuing official books of precedent , collecting and listing all the rescripts that had been issued from the reign of Hadrian ( r .
 person: Gregorius; person: Aurelius Arcadius Charisius; person: Hermogenianus; person: Hadrian
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: Gregorius; person: Aurelius Arcadius Charisius; person: Hermogenianus; person: Hadrian