Write SQL query to solve given problem: Please name any three restaurants that have an unidentified region.. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT T2.label FROM location AS T1 INNER JOIN generalinfo AS T2 ON T1.id_restaurant = T2.id_restaurant INNER JOIN geographic AS T3 ON T2.city = T3.city WHERE T3.region = 'unknown' LIMIT 3