CREATE TABLE table_name_37 (episode NUMBER, performer_4 VARCHAR2, performer_2 VARCHAR2)

What is the sum of the episode numbers where chip esten is the 4th performer and christopher smith was the 2nd performer?
SELECT SUM(episode) FROM table_name_37 WHERE performer_4 = "chip esten" AND performer_2 = "christopher smith"
SELECT SUM("episode") FROM "table_name_37" WHERE "chip esten" = "performer_4" AND "christopher smith" = "performer_2"