Nigehörn
Nigehörn is an uninhabited artificial island in the North Sea belonging to the German city of Hamburg . 
<triplet> Nigehörn <subj> artificial island <obj> instance of <triplet> North Sea <subj> German <obj> basin country <triplet> German <subj> North Sea <obj> located in or next to body of water <subj> Hamburg <obj> contains administrative territorial entity <triplet> Hamburg <subj> North Sea <obj> located in or next to body of water <subj> German <obj> located in the administrative territorial entity