How many dishes appear in the right upper corner of the menu page?
appear in the right upper corner of the menu page refers to xpos > 0.75 and ypos < 0.25;
SELECT COUNT(*) FROM MenuItem AS T1 INNER JOIN Dish AS T2 ON T1.dish_id = T2.id WHERE T1.xpos > 0.75 AND T1.ypos < 0.25