 Complete the following phrase:  Jan Šrámek born 4 September 1945 is a Czech former pair skater who represented Czechoslovakia. With his sister, Bohunka Šrámková, he is the 1968 Winter Universiade champion and 1967 Czechoslovak national champion. The pair placed tenth at the 1968 Winter Olympics in Grenoble, France. They also finished in the top ten at three ISU Championships 