CREATE TABLE lessons (lesson_id DECIMAL, customer_id DECIMAL, lesson_status_code TEXT, staff_id DECIMAL, vehicle_id DECIMAL, lesson_date TIME, lesson_time TEXT, price DECIMAL)
CREATE TABLE staff (staff_id DECIMAL, staff_address_id DECIMAL, nickname TEXT, first_name TEXT, middle_name TEXT, last_name TEXT, date_of_birth TIME, date_joined_staff TIME, date_left_staff TIME)
CREATE TABLE customers (customer_id DECIMAL, customer_address_id DECIMAL, customer_status_code TEXT, date_became_customer TIME, date_of_birth TIME, first_name TEXT, last_name TEXT, amount_outstanding DECIMAL, email_address TEXT, phone_number TEXT, cell_mobile_phone_number TEXT)
CREATE TABLE vehicles (vehicle_id DECIMAL, vehicle_details TEXT)
CREATE TABLE customer_payments (customer_id DECIMAL, datetime_payment TIME, payment_method_code TEXT, amount_payment DECIMAL)
CREATE TABLE addresses (address_id DECIMAL, line_1_number_building TEXT, city TEXT, zip_postcode TEXT, state_province_county TEXT, country TEXT)

Which city does staff with first name as Janessa and last name as Sawayn live?
SELECT T1.city FROM addresses AS T1 JOIN staff AS T2 ON T1.address_id = T2.staff_address_id WHERE T2.first_name = "Janessa" AND T2.last_name = "Sawayn"
SELECT "T1"."city" FROM "addresses" AS "T1" JOIN "staff" AS "T2" ON "Janessa" = "T2"."first_name" AND "Sawayn" = "T2"."last_name" AND "T1"."address_id" = "T2"."staff_address_id"