Join customer names with their lived-in countries.
select t1.first_name, t1.last_name, t2.country from customers as t1 join addresses as t2 on t1.customer_address_id = t2.address_id
Which country does customer with first name as Carole and last name as Bernhard live in?
select t2.country from customers as t1 join addresses as t2 on t1.customer_address_id = t2.address_id where t1.first_name = "Carole" and t1.last_name = "Bernhard"