<prompt> Pedzisa mutsara unotevera: Nathan Cross akaberekwa musi waDecember 2, 1980 mutambi wemuCanada anokwikwidza kubva muna 2007. Akakunda menduru yesirivha mumutambo wemapoka evatambi ve bobsleigh-skeleton pa  <response>: 2008 FIBT World Championships muAltenberg, Germany. 