Caster Semenya blew away the field in her gold-medal winning performance in the women's 800 meters at the World Championships in Berlin, finishing over two seconds ahead of the pack. The only problem is that officials are not sure what the South African 18-year old's gender is, so they submitted her for testing after the event. The investigation could take weeks. Yes, weeks. It turns out this is much more complicated than you think.
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