Forest of Middlesex
The Forest of Middlesex was an ancient woodland covering much of the county of Middlesex , England , that was north of the City of London and now forms the northern part of Greater London . 
<triplet> Middlesex <subj> Greater London <obj> located in the administrative territorial entity <triplet> City of London <subj> Greater London <obj> shares border with <triplet> Greater London <subj> City of London <obj> shares border with