Task: Question Generation
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. 
Subject : Sanchai Ratiwatana 
Relation : residence
Output (English): What city is Sanchai Ratiwatana associated with?