TOKYO, Aug 4 - Young skaters from Japan and Britain soared to victory in the women's park competition on Wednesday, with hometown heroes Sakura Yosozumi and Kokona Hiraki cinching gold and silver, while Britain's Sky Brown took bronze. In the gripping finals, Yosozumi, 19, landed two 540s in her impressive first run, earning the highest score of 60.09 to vault to top place. Hiraki, 12, consistently showed smooth runs throughout Wednesday's competition and took second place with her best score of 59.04. Britain's