Context: CREATE TABLE station (name VARCHAR, station_id VARCHAR); CREATE TABLE train (train_id VARCHAR, Name VARCHAR); CREATE TABLE train_station (station_id VARCHAR, train_id VARCHAR)
Question: What are the names of the stations which serve both "Ananthapuri Express" and "Guruvayur Express" trains?
Answer: 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"