ค่าโดยสารไปกลับสำหรับเที่ยวบินจากเดนเวอร์ไปฟิลาเดลเฟียที่มาถึงหลัง 17.00 น. เป็นเท่าใดสำหรับ CO ไม่จำเป็นต้องใช้ตารางทั้งหมด
what are the round trip fares for flights from DENVER to PHILADELPHIA arriving after 1700 on COIt is not neccessary to use all the tables.
 ground_service:  city_code [ text]  airport_code [ text]  transport_type [ text]  ground_fare [ int] 
SELECT DISTINCT fare.fare_id FROM airport_service AS AIRPORT_SERVICE_0, airport_service AS AIRPORT_SERVICE_1, city AS CITY_0, city AS CITY_1, fare, flight, flight_fare WHERE ((CITY_1.city_code = AIRPORT_SERVICE_1.city_code AND CITY_1.city_name = 'PHILADELPHIA' AND flight.arrival_time > 1700 AND flight.to_airport = AIRPORT_SERVICE_1.airport_code) AND CITY_0.city_code = AIRPORT_SERVICE_0.city_code AND CITY_0.city_name = 'DENVER' AND flight.from_airport = AIRPORT_SERVICE_0.airport_code) AND NOT fare.round_trip_cost IS NULL AND flight_fare.fare_id = fare.fare_id AND flight.airline_code = 'CO' AND flight.flight_id = flight_fare.flight_id