Show the station name with greatest number of trains.
SELECT T2.name FROM train_station AS T1 JOIN station AS T2 ON T1.station_id  =  T2.station_id GROUP BY T1.station_id ORDER BY count(*) DESC LIMIT 1
SELECT T2.name FROM train_station AS T1 JOIN station AS T2 ON T1.station_id  =  T2.station_id GROUP BY T1.station_id ORDER BY count(*) DESC LIMIT 1
[{'Name': 'London Waterloo'}]