 Complete the following phrase:  Gheorghe Simionov born 4 June 1950 is a retired Romanian sprint canoeist. He competed in 500 m and 1000 m doubles at the 1976 Olympics, together with Gheorghe Danilov, and placed fourth and second, respectively. He won ten medals at the ICF Canoe Sprint World Championships with three golds C-2 500 m: 1971; C-2 10000 m: 1966, 1970, five silvers C-2 500 m: 