<prompt> Pedzisa mutsara unotevera: Roland Graupner mudhudhudhu wekuEast Germany uyo akakwikwidza mukupera kwema1970. Akakunda menduru mbiri dzegoridhe mumutambo weK-4 500 m paICF Canoe Sprint World Championships, achivawana mu  <response>: 1978 na1979. 