Drwinka
Drwinka is a river , the right bank tributary of the Vistula with a length of 31 . 05 km ( 19 mi ) . 
<triplet> Drwinka <subj> river <obj> instance of <subj> Vistula <obj> mouth of the watercourse <subj> 31.05 <obj> length <triplet> tributary <subj> river <obj> subclass of <triplet> Vistula <subj> Drwinka <obj> tributary <subj> river <obj> instance of