Pema Tseden's 2005 movie "The Silent Holy Stones" was the first full-length film to be shot entirely in Tibetan (AFP Photo/Greg Baker) (AFP) An award-winning Tibetan film director was detained by police in China and ended up in hospital, officials and fellow cinematographers said Wednesday. Pema Tseden, whose most recent film "Tharlo" was shown at film festivals around the world, was taken away by