Find the list of cities that no customer is living in.
SELECT city FROM addresses WHERE city NOT IN ( SELECT DISTINCT t3.city FROM customers AS t1 JOIN customer_addresses AS t2 ON t1.customer_id  =  t2.customer_id JOIN addresses AS t3 ON t2.address_id  =  t3.address_id)
SELECT city FROM addresses WHERE city NOT IN ( SELECT DISTINCT t3.city FROM customers AS t1 JOIN customer_addresses AS t2 ON t1.customer_id  =  t2.customer_id JOIN addresses AS t3 ON t2.address_id  =  t3.address_id)
[{'city': 'Lucasville'}, {'city': 'New Sabryna'}, {'city': 'Gleasonmouth'}, {'city': 'South Bellaland'}, {'city': 'Felicityfort'}, {'city': 'East Julianaside'}, {'city': 'Port Lilyan'}]