CREATE TABLE table_name_21 (director_s_ VARCHAR, prize VARCHAR, film VARCHAR)

Which Director(s) made the film hanzubon no ojisan and received a prize of 300,000?
SELECT director_s_ FROM table_name_21 WHERE prize = "¥300,000" AND film = "hanzubon no ojisan"
SELECT "director_s_" FROM "table_name_21" WHERE "film" = "hanzubon no ojisan" AND "prize" = "¥300,000"