1755
He passed the imperial examination s in the Jinshi class in 822 , during the reign of Emperor Dezong 's great-grandson Emperor Muzong .
 person: Emperor Dezong; person: Emperor Muzong
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: Emperor Dezong; person: Emperor Muzong