Task: Question Understanding
Input (English): Context : Sanchai Ratiwatana (Last name pronounce : Ra-Ti-Wat) (Thai: สรรค์ชัย รติวัฒน์ 'ต้อง') (born 23 January 1982 in Bangkok) is a professional tennis player from Thailand. 
Question : What city is Sanchai Ratiwatana associated with?
Output (English): residence