CREATE TABLE table_15438 ("Week" CLOB, "Theme" CLOB, "Song choice" CLOB, "Original artist" CLOB, "Result" CLOB)

What was the theme for Vegas Verdicts week with a result of Advanced?
SELECT "Theme" FROM table_15438 WHERE "Result" = 'advanced' AND "Week" = 'vegas verdicts'
SELECT "Theme" FROM "table_15438" WHERE "Result" = 'advanced' AND "Week" = 'vegas verdicts'