Danube
Originating in Germany , the Danube flows southeast for , passing through or bordering Bavaria ( in Germany ) , Austria , Slovakia , Hungary , Croatia , Serbia , Romania , Bulgaria , Moldova and Ukraine before draining into the Black Sea . 
<triplet> Germany <subj> Austria <obj> shares border with <triplet> Danube <subj> Germany <obj> country <subj> Black Sea <obj> mouth of the watercourse <triplet> Austria <subj> Germany <obj> shares border with <subj> Danube <obj> located in or next to body of water <subj> Slovakia <obj> shares border with <subj> Hungary <obj> shares border with <triplet> Slovakia <subj> Danube <obj> located in or next to body of water <subj> Austria <obj> shares border with <subj> Hungary <obj> shares border with <triplet> Hungary <subj> Danube <obj> located in or next to body of water <subj> Austria <obj> shares border with <subj> Slovakia <obj> shares border with <subj> Croatia <obj> shares border with <triplet> Croatia <subj> Hungary <obj> shares border with <triplet> Serbia <subj> Croatia <obj> shares border with <triplet> Bulgaria <subj> Black Sea <obj> shares border with <triplet> Ukraine <subj> Moldova <obj> shares border with <triplet> Black Sea <subj> Danube <obj> tributary