CREATE TABLE table_name_57 (dvd_title VARCHAR(255), region_1 VARCHAR(255), no_of_discs VARCHAR(255))
Which DVD Title has a Region 1 of n/a and greater than 3 in No. of Discs?
    
SQL: SELECT dvd_title FROM table_name_57 WHERE region_1 = "n/a" AND no_of_discs > 3