Indicate the name of the categories to which the products of order number 10933 belong.
order number 10933 refers to OrderID = 10933;
SELECT T3.CategoryName FROM Products AS T1 INNER JOIN `Order Details` AS T2 ON T1.ProductID = T2.ProductID INNER JOIN Categories AS T3 ON T1.CategoryID = T3.CategoryID WHERE T2.OrderID = 10933