Rows that contain unnamed row types

Suppose you create the table that the following figure shows. The student table defines the s_address column as an unnamed row type.
Figure 1: Create the student table.
CREATE TABLE student 
(
s_name     VARCHAR(30),
s_address  ROW(street VARCHAR (20), city VARCHAR(20),
               state CHAR(2), zip VARCHAR(9)),
               grade_point_avg DECIMAL(3,2)
);
The following statement shows you how to add a row to the student table. To insert into the unnamed row-type column s_address, use the ROW constructor but do not cast the row-type value. 
INSERT INTO student
   VALUES ('Keene, Terry', 
      ROW('53 Terra Villa', 'Wheeling', 'IL', '45052'),
      3.75);