How many policies does America Jaskolski have listed?
SELECT count ( * )  FROM customers AS t1 JOIN customers_policies AS t2 ON t1.customer_id  =  t2.customer_id where Customer_name = "America Jaskolski"
count of policies = COUNT(*); listed by America Jaskolski refers to WHERE Customer_name = 'America Jaskolski'; joining tables customers and customers_policies on customer_id;