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Shericka Jackson of Jamaica poses after the women's 400 meter final at the 2019 IAAF World Athletics Championships in Doha, Qatar, Oct. 3, 2019. (Xinhua/Li Ming)
Shericka Jackson of Jamaica poses after the women's 400 meter final at the 2019 IAAF World Athletics Championships in Doha, Qatar, Oct. 3, 2019. (Xinhua/Li Ming)