Alnitak
It is one of the three main stars of Orion's Belt along with Alnilam and Mintaka . 
<triplet> Orion's Belt <subj> Alnilam <obj> has part <subj> Mintaka <obj> has part <triplet> Alnilam <subj> Orion's Belt <obj> part of <triplet> Mintaka <subj> Orion's Belt <obj> part of