CREATE TABLE table_5827 ("Year" FLOAT, "Title" TEXT, "Role" TEXT, "Director" TEXT, "Notes" TEXT)

Notes of bbc radio 3, and a Title of carnival involves which director?
SELECT "Director" FROM table_5827 WHERE "Notes" = 'bbc radio 3' AND "Title" = 'carnival'
SELECT "Director" FROM "table_5827" WHERE "Notes" = 'bbc radio 3' AND "Title" = 'carnival'