6857
His mother was the daughter of John , Margrave of Brandenburg-Kulmbach , and the niece of Emperor Sigismund of the Holy Roman Empire .
 person: John , Margrave of Brandenburg-Kulmbach; person: Emperor Sigismund; organization: Holy Roman Empire
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: John , Margrave of Brandenburg-Kulmbach; person: Emperor Sigismund; organization: Holy Roman Empire