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?
{'answer': 'Baku', 'supporting_facts': [['Qarğalıq, Nakhchivan', 2], ['Baku', 0]]}