Seibu Railway
Seibu Railway's operations are concentrated in northwest Tokyo and Saitama Prefecture; the name "Seibu" is an abbreviation of "west Musashi" , referring to the historic name for this area . 
<triplet> Seibu Railway <subj> Tokyo <obj> located in the administrative territorial entity <triplet> Musashi <subj> Saitama Prefecture <obj> located in present-day administrative territorial entity