Storsjön
From Storsjön runs the river Indalsälven and the lake contains the major island Frösön . 
<triplet> Storsjön <subj> Indalsälven <obj> inflows <triplet> Indalsälven <subj> Storsjön <obj> lakes on river <triplet> Frösön <subj> Storsjön <obj> located in or next to body of water