<prompt> Pedzisa mutsara unotevera: Kirchner akanga ari mumwe wevatambi vashanu kuti vazivise kutanga kweOlympic kweMarshall Islands pa2008 Summer Olympics muBeijing, vachikwikwidza mu  <response>: 50 m freestyle yevakadzi. Akagadzira zvakanakisisa zvake zve30.42 kuti atore nzvimbo yechina uye makumi manomwe neshanu zvachose mumatatu matatu emangwanani ekutanga, achitadza kufambira mberi kusvika kumusoro 16 semifinals. 