Write SQL query to solve given problem: Among the films starring PENELOPE GUINESS, how many of them are released in 2006?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT COUNT(T2.film_id) FROM actor AS T1 INNER JOIN film_actor AS T2 ON T1.actor_id = T2.actor_id INNER JOIN film AS T3 ON T2.film_id = T3.film_id WHERE T3.release_year = 2006 AND T1.first_name = 'PENELOPE' AND T1.last_name = 'GUINESS'