 Complete the following phrase:  Emma Coburn born October 19, 1990 is an American middle-distance runner who specializes in the 3000 meter steeplechase. At the 2017 World Championships in London, Coburn won the 3000 metres steeplechase with a time of 9.02.58, breaking her own American record. This made her the first American woman to win a gold medal in the steeplechase at the World Championships. Previously, she set an American record of 9:07.63 in the 3000 meter steeplechase to win a bronze medal at the 2016 Olympic Games. This also made her the first American woman to win any Olympic medal in that event. Her other achievements in the event include earning a silver medal at the 2019 World Championships, reaching the 2012 Olympic final 8th, and the World Championship finals in 2011 10th and 