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Her father , William O. Ludwig of Aurora , Colo. , retired as the chief financial officer of the Holly Sugar Company in Colorado Springs and served in the Peace Corps from 1995 to 1997 in Sofia , Bulgaria , as a small-business consultant .
 location contains: Bulgaria, Sofia; country of administrative divisions: Bulgaria, Sofia; administrative division of country: Sofia, Bulgaria; country of capital: Bulgaria, Sofia
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:  Bulgaria, Sofia; Bulgaria, Sofia; Sofia, Bulgaria; Bulgaria, Sofia 
Answer:
 location contains: Bulgaria, Sofia; country of administrative divisions: Bulgaria, Sofia; administrative division of country: Sofia, Bulgaria; country of capital: Bulgaria, Sofia