Write SQL query to solve given problem: How many books were published by Brava in 2006?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT COUNT(*) FROM book AS T1 INNER JOIN publisher AS T2 ON T1.publisher_id = T2.publisher_id WHERE T2.publisher_name = 'Brava' AND STRFTIME('%Y', T1.publication_date) = '2006'