CREATE TABLE table_228973_5 (directed_by VARCHAR2, original_air_date VARCHAR2)

Who directed the episode that originally aired on February 16, 1999?
SELECT directed_by FROM table_228973_5 WHERE original_air_date = "February 16, 1999"
SELECT "directed_by" FROM "table_228973_5" WHERE "February 16, 1999" = "original_air_date"