Alnitak
Alnitak , designation ζ Orionis ( Latinised to Zeta Orionis , abbreviated Zeta Ori , ζ Ori ) and 50 Orionis ( abbreviated 50 Ori ) , is a triple star system in the constellation of Orion several hundred parsecs from the Sun . 
<triplet> Alnitak <subj> Orion <obj> constellation <triplet> Orion <subj> Alnitak <obj> has part <subj> constellation <obj> instance of