Steel City
Sheffield , South Yorkshire , United Kingdom; Pittsburgh , Pennsylvania , United States; Gary , Indiana , United States; Pueblo , Colorado , United States; Newcastle , New South Wales , Australia; Hamilton , Ontario , Canada and India; Jamshedpur are some of the cities most commonly referred to with this name , in their respective countries . 
<triplet> Sheffield <subj> Pittsburgh <obj> twinned administrative body <triplet> Pittsburgh <subj> Sheffield <obj> twinned administrative body <triplet> Hamilton <subj> Ontario <obj> located in the administrative territorial entity