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Senator Evan Bayh , son of former Senator Birch Bayh of Indiana , is organizing and testing the waters for a possible presidential bid in 2008 .
 children: Birch Bayh, Evan Bayh
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:  Birch Bayh, Evan Bayh 
Answer:
 children: Birch Bayh, Evan Bayh