Middle Harbour
Middle Harbour ( or Warring-Ga ) , a semi–mature tide dominated drowned valley estuary , is the northern arm of Port Jackson , an inlet of the Tasman Sea located north of Sydney central business district on the coast of New South Wales , Australia . 
<triplet> Middle Harbour <subj> estuary <obj> instance of <triplet> drowned valley <subj> estuary <obj> has effect <triplet> Port Jackson <subj> drowned valley <obj> instance of <subj> Tasman Sea <obj> part of <triplet> Tasman Sea <subj> Australia <obj> basin country <triplet> Sydney central business district <subj> New South Wales <obj> located in the administrative territorial entity <subj> Australia <obj> country <triplet> New South Wales <subj> Australia <obj> country <triplet> Australia <subj> Tasman Sea <obj> located in or next to body of water <subj> New South Wales <obj> contains administrative territorial entity