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On 10 February 2009 it was revealed by the Greek networks   ( ERT ) and MAD TV (  Greece  ) that Porteilis along with fellow Greek-Australian songwriter and record executive Cameron Giles-Webb have written the lyrics to two songs called Right on Time and This is Our Night for Greek superstar Sakis Rouvas as two of three potential candidates that will compete in the Greek National Final where both the public and a professional jury will vote on 18 February to select Rouvas ' entry to represent Greece in the Eurovision Song Contest 2009 in Moscow .
 country of headquarters: , Greece
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:
 country of headquarters: , Greece