Master Derby
Master Derby ( April 24 , 1972 – January 22 , 1999 ) was an American Thoroughbred racehorse best known for winning the 1975 Preakness Stakes . 
<triplet> Master Derby <subj> Thoroughbred <obj> animal breed <triplet> 1975 Preakness Stakes <subj> American <obj> country <subj> racehorse <obj> sport <subj> 1975 <obj> point in time