Großer Graben and Schiffgraben
Großer Graben and Schiffgraben together are an artificial waterbody with ambiguous flows in Lower Saxony and Saxony-Anhalt , Germany , partly forming the border of both "Länder" . 
<triplet> Lower Saxony <subj> Saxony-Anhalt <obj> shares border with <subj> Germany <obj> country <triplet> Saxony-Anhalt <subj> Lower Saxony <obj> shares border with <subj> Germany <obj> country <subj> Länder <obj> instance of <triplet> Germany <subj> Lower Saxony <obj> contains administrative territorial entity <subj> Saxony-Anhalt <obj> contains administrative territorial entity