2387
Liverpool  produced a number of nationally and internationally successful popular singers in the 1950s including traditional pop stars Frankie Vaughan and  Lita Roza  and one of the most successful British rock and roll stars in Billy Fury .
 None
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:
 NA: Liverpool, Lita Roza