Pontsticill Reservoir
Pontsticill Reservoir or Taf Fechan Reservoir is a large reservoir on the Taf Fechan lying partly in the county of Powys and partly within the county borough of Merthyr Tydfil in south Wales . 
<triplet> Taf Fechan <subj> Wales <obj> located in the administrative territorial entity <triplet> Powys <subj> Wales <obj> located in the administrative territorial entity <triplet> Wales <subj> Powys <obj> contains administrative territorial entity