VIDEO AT LINK............... May 30 (UPI) -- The annual Cooper's Hill Cheese-Rolling race in England featured the winner of one round getting knocked unconscious and only learning of her victory when she woke up in a medical tent. The annual event in Brockworth, near Gloucester, featured multiple rounds of racers stumbling down the steep Cooper's Hill to chase a simulated wheel of double Gloucester cheese to earn a real wheel of cheese as a prize. Delaney Irving, 19, who traveled from Canada to participate in the cheese chase, ran in a women-only round and didn't discover she had won the...