CREATE TABLE train_station (train_id DECIMAL, station_id DECIMAL)
CREATE TABLE train (train_id DECIMAL, name TEXT, time TEXT, service TEXT)
CREATE TABLE station (station_id DECIMAL, name TEXT, annual_entry_exit DECIMAL, annual_interchanges DECIMAL, total_passengers DECIMAL, location TEXT, main_services TEXT, number_of_platforms DECIMAL)

Show all locations that have train stations with at least 15 platforms and train stations with more than 25 total passengers.
SELECT DISTINCT location FROM station WHERE number_of_platforms >= 15 AND total_passengers > 25
SELECT DISTINCT "location" FROM "station" WHERE "number_of_platforms" >= 15 AND "total_passengers" > 25