Twilight Derby
The Twilight Derby is a Grade II American Thoroughbred horse race for three years olds over the distance of one-and-one-eighth miles on the turf scheduled annually in October at Santa Anita Park in Arcadia , California . 
<triplet> Grade II <subj> Thoroughbred horse race <obj> subclass of <triplet> Santa Anita Park <subj> Arcadia, California <obj> located in the administrative territorial entity