What are the line 1 and average monthly rentals of all student addresses?
SELECT T1.line_1 ,  avg(T2.monthly_rental) FROM Addresses AS T1 JOIN Student_Addresses AS T2 ON T1.address_id  =  T2.address_id GROUP BY T2.address_id
SELECT T1.line_1 ,  avg(T2.monthly_rental) FROM Addresses AS T1 JOIN Student_Addresses AS T2 ON T1.address_id  =  T2.address_id GROUP BY T2.address_id
[{'line_1': '020 Orie Canyon', 'avg(T2.monthly_rental)': 1028.9549333333334}, {'line_1': '1333 Boyle Lane', 'avg(T2.monthly_rental)': 1132.742}, {'line_1': '027 Kim Divide Apt. 492', 'avg(T2.monthly_rental)': 847.1086}, {'line_1': '719 Pfannerstill Ridge Suite 663', 'avg(T2.monthly_rental)': 1007.2597}, {'line_1': "6960 O'Connell Dale Suite 622", 'avg(T2.monthly_rental)': 1076.41095}, {'line_1': '18327 Jaime Terrace Suite 343', 'avg(T2.monthly_rental)': 679.2988}, {'line_1': '3069 Garrison Squares', 'avg(T2.monthly_rental)': 1032.9782}, {'line_1': '11940 Pauline Shoals', 'avg(T2.monthly_rental)': 786.98155}, {'line_1': '39834 Anne Mission Apt. 956', 'avg(T2.monthly_rental)': 1052.34225}, {'line_1': '014 Runte Haven Apt. 870', 'avg(T2.monthly_rental)': 990.44025}, {'line_1': '266 Kub Crossing', 'avg(T2.monthly_rental)': 866.68985}, {'line_1': '51391 Dach Parkways Apt. 124', 'avg(T2.monthly_rental)': 644.9306}]