2517
After years of peaceful and democratic progress Barbados finally became an independent state and formally joined the Commonwealth of Nations on 30 November 1966  Errol Barrow  serving as its first  Prime Minister  .
 title of person: Errol Barrow, Prime Minister
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: Errol Barrow, Prime Minister