Slana River
The Slana River , also known as Slahna , Slakna , or Sla River , is a tributary of the Copper River in southern Alaska in the United States . 
<triplet> Slana River <subj> Copper River <obj> mouth of the watercourse <subj> Alaska <obj> located in the administrative territorial entity <triplet> Copper River <subj> Slana River <obj> tributary <subj> Alaska <obj> located in the administrative territorial entity