List the full address of all the American restaurants with a review of 4 or more?
full address refers to street_num, street_name, city; American restaurant refers to food_type = 'american'; a review of 4 or more refers to review > 4
SELECT T1.street_num, T1.street_name, T1.city FROM location AS T1 INNER JOIN generalinfo AS T2 ON T1.city = T2.city WHERE T2.review >= 4