15504
1407 as the fifth son of the Byzantine Emperor Manuel II Palaiologos ( reigned 1391–1425 ) and his wife Helena Dragaš .
 organization: Byzantine Emperor; person: Manuel II Palaiologos; person: Helena Dragaš
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: Byzantine Emperor, Manuel II Palaiologos, Helena Dragaš 
Answer:
 organization: Byzantine Emperor; person: Manuel II Palaiologos; person: Helena Dragaš