 Complete the following phrase:  Frank Fischer is an East German sprint canoer who competed from 1981 to 1986. He won nine medals at the ICF Canoe Sprint World Championships with four golds K-2 500 m: 1983, K-2 1000 m: 1983, K-4 500 m: 1985, 1986, three silvers K-2 1000 m: 1981, 1986; K-4 500 m: 