15787
The seat was formerly held by NDP  David Christopherson  who had stepped down to enter the City of  Hamilton  mayoral race .
 David Christopherson, Hamilton
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; 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:
 David Christopherson, Hamilton