<prompt> Pedzisa mutsara unotevera:  <response>: 2009 World Taekwondo Championships muCopenhagen, Denmark, St. Bernard akabviswa mumutambo wekutanga wevakadzi welterweight chiitiko mushure mekurasikirwa naSun Ai-chi weChinese Taipei. Pa2011 World Championships muGyeongju, South Korea, akarambwa mumutambo wake wekutanga mumakwikwi evakadzi vewelterweight. 