CREATE TABLE table_2618152_1 (title VARCHAR, original_air_date VARCHAR)

What is the title of the episode with the original air date October 21, 1998?
SELECT title FROM table_2618152_1 WHERE original_air_date = "October 21, 1998"
SELECT "title" FROM "table_2618152_1" WHERE "October 21, 1998" = "original_air_date"