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Britain have two Grand Slam singles semi-finalists for the first time since 1977 after victories for Johanna Konta and Andy Murray at the Australian Open. Konta continued her remarkable run with a 6-4 6-1 win over China's Zhang Shuai in the quarter-finals and next faces German seventh seed Angelique Kerber. But just who is Johanna Konta? Â鶹Éç Sport correspondent Andy Swiss gave PM a bluffer's guide PHOTO: Johanna Konta. Credit: REUTERS