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Mr. Weld 's loss in the 1996 Senate race in Massachusetts , to John Kerry , was his political low point , but he bounced back the next year by relishing the political combat against a fellow Republican , Jesse Helms , then a senator , over Mr. Weld 's nomination by President Clinton to be ambassador to Mexico .
 John Kerry, Massachusetts
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:
 John Kerry, Massachusetts