Database: menu
Question: How many dishes are there in total in the menus with the name "Waldorf Astoria"?
SQL: SELECT SUM(CASE WHEN T3.name = 'Waldorf Astoria' THEN 1 ELSE 0 END) FROM MenuItem AS T1 INNER JOIN MenuPage AS T2 ON T1.menu_page_id = T2.id INNER JOIN Menu AS T3 ON T2.menu_id = T3.id