CREATE TABLE table_63545 ("Children of Earth" TEXT, "Run time" TEXT, "Writer" TEXT, "Director" TEXT, "Original airdate" TEXT, "Viewers  ( including HD )  in millions" TEXT)

Who was the director of Children of Earth of 'day five'?
SELECT "Director" FROM table_63545 WHERE "Children of Earth" = 'day five'
SELECT "Director" FROM "table_63545" WHERE "Children of Earth" = 'day five'