Question: What is the largest city on the Caspian Sea and of the Caucasus region, has a railway line in the station in a settlement in the municipality of Nakhchivan in Nakhchivan City, Nakhchivan Autonomous Republic, Azerbaijan?
Sentence (from "Qarğalıq, Nakhchivan"): Qarağalıq (also, Garghalyg, Gargalig and Karqalyk) is a settlement in the municipality of Nakhchivan in Nakhchivan City, Nakhchivan Autonomous Republic, Azerbaijan.
Relevant evidence: No