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Sifan Hassan (front 1st R) of the Netherlands competes during the Women's 1500m Final at the 2019 IAAF World Athletics Championships in Doha, Qatar, Oct. 5, 2019. (Xinhua/Jia Yuchen)

Sifan Hassan (front 1st R) of the Netherlands competes during the Women's 1500m Final at the 2019 IAAF World Athletics Championships in Doha, Qatar, Oct. 5, 2019. (Xinhua/Jia Yuchen)