Ozerki line
The Ozerki line was the first line constructed by the Primorskaya railway in Saint Petersburg , Russia . 
<triplet> Ozerki line <subj> Saint Petersburg <obj> located in the administrative territorial entity <triplet> Primorskaya railway <subj> Russia <obj> country <triplet> Saint Petersburg <subj> Russia <obj> country <triplet> Russia <subj> Saint Petersburg <obj> contains administrative territorial entity