 Complete the following phrase:  Selemon Barega Shirtaga born 20 January 2000 is an Ethiopian long-distance runner who competes primarily in the 5000 metres and 10,000 meters. He won the gold medal at the 10,000 m at the 2020 Tokyo Summer Olympics. He represented his country at the 2017 World Championships finishing fifth in the final. He also won gold medals at the 