Question: What are the names of the stations which serve both "Ananthapuri Express" and "Guruvayur Express" trains?
Schema: create table station (name varchar, station_id varchar, PRIMARY KEY (name)); create table train (train_id varchar, name varchar, PRIMARY KEY (train_id)); create table train_station (station_id varchar, train_id varchar, PRIMARY KEY (station_id))
SQL: select t2.name from train_station as t1 join station as t2 on t1.station_id = t2.station_id join train as t3 on t3.train_id = t1.train_id where t3.name = "ananthapuri express" intersect select t2.name from train_station as t1 join station as t2 on t1.station_id = t2.station_id join train as t3 on t3.train_id = t1.train_id where t3.name = "guruvayur express"