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He was the son of the politician and lawyer Themistoklis Tsatsos ( 1906 1971 ) and a nephew of former President of  Greece   Konstantinos Tsatsos  ( 1899 1987 ) .
 Greece, Konstantinos Tsatsos
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; 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:
 Greece, Konstantinos Tsatsos