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He returned to Singapore after its independence from Malaysia and became  Prime Minister   Lee Kuan Yew  Press Secretary for 10 years and biographer and public relations officer .
 title of person: Prime Minister, Lee Kuan Yew
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: Prime Minister, Lee Kuan Yew