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Upon the death of Byzantine  Emperor   John VIII Palaiologos  in Constantinople in October 1448 the imperial throne fell to Constantine who was crowned on 6 January 1449 in Mystras before departing for the capital .
 title of person: Emperor, John VIII Palaiologos
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
Answer:
 title of person: Emperor, John VIII Palaiologos