 Complete the following phrase:  Mayada Al-Sayad ; born 26 October 1992 in Berlin is a German-born Palestinian long-distance runner. She competed in the marathon at the 2015 World Championships and at the 2016 Olympics, where she finished 50th and was the Palestinian flag bearer in the opening ceremony. In 2017 she participated in the World Championships held in London, placing 68th in the 