Ulvsjön
Ulvsjön is a lake in Stockholm County , Södermanland , Sweden . 
<triplet> Ulvsjön <subj> Sweden <obj> country <triplet> Stockholm County <subj> Sweden <obj> country <triplet> Södermanland <subj> Stockholm County <obj> located in the administrative territorial entity <subj> Sweden <obj> country <triplet> Sweden <subj> Stockholm County <obj> contains administrative territorial entity <subj> Södermanland <obj> has part