Slănic mine
Slănic mine is an old salt mine , located in Slănic , Prahova County , Romania , just 100 km north of Bucharest . 
<triplet> Slănic mine <subj> Romania <obj> country <triplet> Slănic <subj> Prahova County <obj> located in the administrative territorial entity <subj> Romania <obj> country <triplet> Prahova County <subj> Slănic <obj> contains administrative territorial entity <subj> Romania <obj> country <triplet> Romania <subj> Prahova County <obj> contains administrative territorial entity <subj> Bucharest <obj> contains administrative territorial entity <triplet> Bucharest <subj> Romania <obj> located in the administrative territorial entity