CREATE TABLE table_name_18 (week__number VARCHAR, original_artist VARCHAR, theme VARCHAR)

What is the Week # when the Beatles were the original artist and the theme was The Beatles?
SELECT week__number FROM table_name_18 WHERE original_artist = "the beatles" AND theme = "the beatles"
SELECT "week__number" FROM "table_name_18" WHERE "original_artist" = "the beatles" AND "the beatles" = "theme"