Duisburg-Ruhrort–Dortmund railway
The Duisburg-Ruhrort–Dortmund railway ( also called the Cologne-Minden Emscher Valley Railway ) was built by the Cologne-Minden Railway Company ( "Cöln-Mindener Eisenbahn-Gesellschaft" , CME ) in the area to the north of its original Ruhr line to improve connections to mines and factories in the northern Ruhr region , which is now in the German state of North Rhine-Westphalia . 
<triplet> Duisburg-Ruhrort–Dortmund railway <subj> North Rhine-Westphalia <obj> located in the administrative territorial entity <triplet> Ruhr line <subj> North Rhine-Westphalia <obj> located in the administrative territorial entity <triplet> Ruhr <subj> North Rhine-Westphalia <obj> located in the administrative territorial entity