13593
The 15-year indiction cycle established by Diocletian in 297 was based on quindecennial censuses and formed the basis for dating in late antiquity and under the Byzantine Empire .
 person: Diocletian
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Diocletian 
Answer:
 person: Diocletian