North Caucasus Railway ( ) is a broad gauge Russian railway network that links the Sea of Azov ( in the west ) and Caspian Sea ( in the east ) .
PROPN PROPN PROPN ( ) AUX DET ADJ NOUN ADJ NOUN NOUN DET VERB DET PROPN ADP PROPN ( ADP DET NOUN ) CCONJ PROPN PROPN ( ADP DET NOUN ) .