<prompt> Kalima dǝwo fuwunzǝdǝ kamil: Iliana Nikolova dǝ bǝla bulgarye sprint canoer ye dǝwo suro dare 1970s ye dǝn kǝla bǝla dǝn kǝla bǝla dǝn kǝltǝna. Shiye medal arinzabe fәlezәna suro K-4 500 m event dәn.  <response>: 1978 ICF Canoe Sprint World Championships suro Belgrade yen. 