Question: Which Olympic gold medal-winning amateur boxer is the younger brother of Somrot Kamsing?
Sentence (from "Somrot Kamsing"): Somrot Kamsing (Thai: สมรถ คำสิงห์ , born 1971-09-24) is a retired male boxer from Thailand, who competed for his Asian country at the 1996 Summer Olympics.
Relevant evidence: No