NGC 3628
Along with M65 and M66 , NGC 3628 forms the Leo Triplet , a small group of galaxies . 
<triplet> M65 <subj> Leo Triplet <obj> part of <triplet> M66 <subj> Leo Triplet <obj> part of <triplet> NGC 3628 <subj> Leo Triplet <obj> part of <triplet> Leo Triplet <subj> M65 <obj> has part <subj> M66 <obj> has part <subj> NGC 3628 <obj> has part <subj> group of galaxies <obj> instance of