CREATE TABLE table_name_57 (dvd_title VARCHAR2, region_1 VARCHAR2, no_of_discs VARCHAR2)

Which DVD Title has a Region 1 of n/a and greater than 3 in No. of Discs?
SELECT dvd_title FROM table_name_57 WHERE region_1 = "n/a" AND no_of_discs > 3
SELECT "dvd_title" FROM "table_name_57" WHERE "n/a" = "region_1" AND "no_of_discs" > 3