33957
Since then he 's traveled to , among other places , Turks and Caicos , Cabo San Lucas and London , where he and his wife , Helen , watched the changing of the guard at St. James 's Palace from the terrace of the club 's two-bedroom flat . ''
 place of birth: Helen, London
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: 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} 
 Entity Pairs:  Helen, London 
Answer:
 place of birth: Helen, London