Asama Onsen
is an onsen located in the city of Matsumoto , Nagano Prefecture , Japan . 
<triplet> Matsumoto <subj> Nagano Prefecture <obj> located in the administrative territorial entity <subj> Japan <obj> country <triplet> Nagano Prefecture <subj> Matsumoto <obj> contains administrative territorial entity <subj> Japan <obj> country <triplet> Japan <subj> Nagano Prefecture <obj> contains administrative territorial entity