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In 828 , during the reign of Emperor Xianzong 's grandson Emperor Wenzong , he was made Taichang Boshi ( 太常博士 ) , a scholar at the ministry of worship ( 太常寺 , Taichang Si ) .
 person: Emperor Xianzong; person: Emperor Wenzong
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: Emperor Xianzong, Emperor Wenzong 
Answer:
 person: Emperor Xianzong; person: Emperor Wenzong