Château des ducs de Bretagne
The Château des ducs de Bretagne is a large castle located in the city of Nantes in the Loire-Atlantique "département" of France; it served as the centre of the historical province of Brittany until its separation in 1956 . 
<triplet> Château des ducs de Bretagne <subj> castle <obj> instance of <subj> Nantes <obj> located in the administrative territorial entity <triplet> Nantes <subj> Loire-Atlantique <obj> located in the administrative territorial entity <triplet> Loire-Atlantique <subj> Nantes <obj> capital <triplet> Brittany <subj> Loire-Atlantique <obj> has part