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When peace was finally brokered between north and south in Sudan in January 2005 , much of the credit went to evangelicals like Franklin Graham , Billy Graham 's son , who runs the mission organization Samaritan 's Purse .
 children: Billy Graham, Franklin Graham
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:  Billy Graham, Franklin Graham 
Answer:
 children: Billy Graham, Franklin Graham