Of three blacks, the oldest is a daddy;
Of two browns, the 3 year old male is called BILLY,
And the horse SNOWY is white as a lily.
Of two half-sister mares, the black won in the Derby
She's a shade lighter than her daughter, BEAUTY
BEAUTY and her cousin LUCKY, both half the age of their auntie,
But faster than either ROCKY or SUNNY.
Three of the horses are ready for the Derby,
A horse must be three years to be an entry;
Maybe this year the farm gets lucky, Their stallion's loss last year was a pity.
CHALLENGE: Describe the horse that lost in last year's derby.