 Complete the following phrase:  Celliphine Chepteek Chespol born March 23, 1999 is a Kenyan track and field athlete, specialising in steeplechase running. In winning the 3000 metres steeplechase at 2017 Prefontaine Classic, her time of 8:58.78 for was the second fastest of all time. Since she was 18 years 64 days old, it was also the world junior record. The race is more impressive since she lost her shoe at the water jump with more than a lap to go during the race. Later in the year, she represented Kenya at the 