CREATE TABLE table_18933 ("Year  ( Ceremony ) " CLOB, "Film title used in nomination" CLOB, "Original title" CLOB, "Director" CLOB, "Result" CLOB)

Who is the director of the fimm Biola Tak Berdawai?
SELECT "Director" FROM table_18933 WHERE "Original title" = 'Biola tak berdawai'
SELECT "Director" FROM "table_18933" WHERE "Original title" = 'Biola tak berdawai'