<prompt> Ngwala tšwetšopele ya serapa se - Yeom Hyo-Seob Hangul: 염효섭 ke moithuti wa Taekwondo wa Korea Borwa. O thopile sefoka sa gauta sehlopheng sa bantamweight -63 kg go 2009 World Taekwondo Championships  <response>: kua Copenhagen, Denmark. 