 Complete the following phrase:  Mariya Timofeyevna Shubina ; born 12 May 1930 is a Soviet sprint canoeist who competed from the late 1950s to the late 1960s. She won the K-2 500 m gold medal at the 1960 Summer Olympics in Rome. Shubina also won six medals at the ICF Canoe Sprint World Championships with four golds K-1 500 m: 1963, K-2 500 m: 