open metal structure under roof
solid, transparent and semi-transparent panels on roof
trains next to far platform 
flat gray ground with unused track
crossed bars on supporting structure
subway on the tracks
roof of train station
beams of roof frame
two trains on tracks
The train is on the track. 
The station's roof is above the trains.
The train is colorful.
The train is on the tracks.
The trains are going in the same direction.
The trains are on the same track.
a train on a track
blue, yellow and purple train pulling into a station with platforms