 Complete the following phrase:  Jaroslava Jarka Lutz née Krčálová is a Czechoslovak-French retired slalom canoeist who competed in the late 1960s. She won a gold medal in the mixed C-2 event at the 1967 ICF Canoe Slalom World Championships in Lipno nad Vltavou representing Czechoslovakia. She married French slalom canoeist Claude Lutz in December 1967 and continued competing with him in C-2 Mixed malefemale double canoe. Together they won two silver medals at the 