<prompt> Robert Sullivan ndiye Muvambi uye Murayiridzi Mukuru weGo-Kan-Ryu Karate.  <response>: Chokwadika, shanduro yakaoma zvikuru yemutsara ndeiyi Robert Sullivan ndiye Muvambi uye Murayiridzi Mukuru weGo-Kan-Ryu Karate akaverengerwa ku8th dan black belt neVarairidzi vake Vakuru musi wa16 Nyamavhuvhu 2009, kunyange zvazvo asina kumbobvira aongororwa kunze kwe2nd dan. 