13830
Paul McCartney is at work on a stage musical drawn from his working class childhood in Liverpool , The Sunday Telegraph of London reported .
 Paul McCartney, Liverpool; Paul McCartney, Liverpool
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: ethnicity, place lived, geographic distribution, company industry, country of administrative divisions, administrative division of country, location contains, person of company, profession, ethnicity of people, company shareholder among major shareholders, sports team of location, religion, neighborhood of, company major shareholders, place of death, nationality, children, company founders, company founded place, country of capital, company advisors, sports team location of teams, place of birth 
Text: {0} 
Answer:
 Paul McCartney, Liverpool; Paul McCartney, Liverpool