 Complete the following phrase:  She also competed at the 2017 World Championships in Athletics in London, where she was eliminated in the preliminary round of womens 800m event after finishing with 2: 08.49 minutes. She also became the first Sri Lankan athlete to compete in womens 800m event at a World Athletics Championships. The following year, she won the bronze medal behind the Chinese duo Wang Chunyu and Hu Zhiying at the 