Sydney Harbour railway electricity tunnel
Sydney Harbour railway electricity tunnel is heritage-listed electricity infrastructure running under Sydney Harbour between Birchgrove and Greenwich , Sydney , New South Wales , Australia . 
<triplet> Sydney Harbour railway electricity tunnel <subj> New South Wales <obj> located in the administrative territorial entity <triplet> Sydney Harbour <subj> New South Wales <obj> located in the administrative territorial entity <triplet> Birchgrove <subj> New South Wales <obj> located in the administrative territorial entity <triplet> Greenwich <subj> New South Wales <obj> located in the administrative territorial entity <triplet> Sydney <subj> New South Wales <obj> located in the administrative territorial entity