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He met Doug Sahm , his future collaborator in the Texas Tornadoes , at a battle of the bands in 1960 , on the roof of San Antonio 's Town Twin Drive-In .
 Doug Sahm, San Antonio; Texas, San Antonio
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:
 Doug Sahm, San Antonio; Texas, San Antonio