CREATE TABLE table_29437 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Production code" CLOB, "U.S. viewers  ( millions ) " CLOB)

who directed the episode that elaine ko wrote?
SELECT "Directed by" FROM table_29437 WHERE "Written by" = 'Elaine Ko'
SELECT "Directed by" FROM "table_29437" WHERE "Written by" = 'Elaine Ko'